When you come across a beeping pedestrian crossing button, you can hold it down for 3 seconds to activate the audible / accessible signal.

published:07 Nov 2016

views:2073

Audible motorcycle/scooter turn signal indicator.

published:01 May 2016

views:2761

FederalSignalsStreamline SLM500 SeriesLED Audible and VisualSignalIndicator presented by Katie Nyberg for Galco TV.
Buy the items featured in this video at 800-337-1720 or visit:http://www.galco.com/buy/Federal-Signal/SLM500A
The SLM500 series is a multifunctional LED beacon and sounder combination developed with a multiple input technology that allows for three separate forms of alarm: Alert, pre-alarm, and alarm that are controllable via independent electric contacts. This model benefits from two light effects: (steady and flashing), and 64 different tones that are selectable via dip-switch.
Sign up for Galco’s newsletter that features our newest products, our can't-miss deals, our best videos, and total access to Galco’s electronics expertise: http://www.galco.com/email/
Connect with us!
https://plus.google.com/+GalcoIndustrial
https://www.facebook.com/GalcoIndustrial
https://twitter.com/GalcoIndustrial
https://www.linkedin.com/company/galco-industrial-electronics
Don't forget to like and comment on this video, and subscribe to our channel!
Galco is a Factory Authorized Stocking Distributor for Over 150 Brands of Industrial Electrical & ElectronicAutomation, Controls and Component Products; On-Site and Send-In Repair Services for Industrial Control & Automation Products for Over 2,000 Brands; Engineered Systems Integration, Retrofits & Upgrades for VariableSpeedDrives, CNC, PLCSystems, Dynamometers & TestStandApplications. Visit us online at http:// www.galco.com or call us at 800-337-1720.
http://www.galco.com/safety
With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.
GTV, Galco, galco.com, Galco Industrial Electronics, and Galco Industrial Electronics, Inc. are registered and/or pending registered trademarks under the U.S. Patent and TrademarkOffice, assumed names, registered domain names, and/or trade names of Galco Industrial Electronics, Inc., a Michigan corporation.
LEGAL DISCLAIMER:
While we have made every attempt to ensure that the information provided is accurate and has been obtained from reliable sources, Galco is not responsible for any errors or omissions, or for the results obtained from the use of this information. All information is provided "as is", with no guarantee of completeness, accuracy, timeliness or of the results obtained from the use of this information, and without warranty of any kind, express or implied, including, but not limited to warranties of performance, merchantability and fitness for a particular purpose. At all times you should defer to the instructions and safety guidelines issued by the manufacturer. In no event will Galco, its agents or employees thereof be liable to you or anyone else for any decision made or action taken in reliance on the information provided to you or for any consequential, special or similar damages, even if advised of the possibility of such damages.

From the album Sky Signal. Purchase the CD / mp3 here:
http://www.polyvinylrecords.com/store/index.php?id=91&cartID=293

published:09 Dec 2010

views:2065

Sinusoidal wave going trough entire human audio spectrum, starting at 20Hz and ending at 20kHz. Note that the frequency increases exponentially, the idea was to increase the frequency by constant fraction of currently played frequency rather than by a constant value (which would result in clearly noticeable fast change at lower frequencies and nearly no change at higher frequencies). Enjoy.
Note: This wave has the same volume level measured by acoustic pressure all the time, however human sound perception differs depending on frequency. For lower frequencies (below 1kHz) you might want to increase your volume, but don't forget to lower it later to avoid damage to your hearing.
If you don't hear anything below 40-50Hz even at full volume your audio hardware is probably incapable of playing lowest frequencies. You might want to try to listen on the headphones in such case. Also if you stop hearing sound somewhere between 10kHz - 20kHz - do not increase your volume for safety reasons. Every human hears a bit differently and have different hearing thresholds. Hearing range also changes with age. Younger people can usually hear higher frequencies.
For HD (High Definition) version of this test, which might yield better audio quality see: http://www.youtube.com/watch?v=H-iCZElJ8m0

published:02 Oct 2012

views:9394529

A demonstration of the Federal Signal SelecTone Model300 Audible Signaling Device. Buy this featured item at 800-337-1720 or follow this link: http://www.galco.com/shop/300-Federal-Signal-Sounders-Audible-Signaling-Devices?source=YouTubeText
The FederalSignal SelecTone® Model 300 is a lightweight and compact, solid‑state audible signaling device designed to amplify a pre‑selected tone over existing ambient noises. The speaker cone and projector are made of spun aluminum. The internal amplifier circuitry and tone module are contained in a housing of die‑cast aluminum. Dust‑ and moisture‑proof gasketing provides protection from the elements. All external components are sealed with gray enamel paint.
Features of the 300 SelecTone:
- 12 VDC/36 VDC/250 VDC
- Compatible with UTMToneModule
- 110 dB at 10 Feet
- 3R TypeEnclosure
- UL; cUL; CSA Approvals
The Model 300 is designed for applications which have 12, 36, or 250VDC power supplies. The 250VDC version is UL and cUL Listed and CSA Certified. All models are rated Type 3R for indoor/outdoor use.
To view more Federal Signal Audible Signaling Devices follow this link: http://www.galco.com/shop/Federal-Signal-Sounders-Audible-Signaling-Devices?source=YouTubeText
And to see the full line of Federal Signal products available, please go to: http://www.galco.com/find/Federal-Signal?source=YouTubeText
Galco is a Factory Authorized Stocking Distributor for Over 150 Brands of Industrial Electrical & ElectronicAutomation, Controls and Component Products; On-Site and Send-In Repair Services for Industrial Control & Automation Products for Over 2,000 Brands; Engineered Systems Integration, Retrofits & Upgrades for VariableSpeedDrives, CNC, PLCSystems, Dynamometers & TestStandApplications. Visit us online at http:// www.galco.com or call us at800-337-1720.
http://www.galco.com/safety
With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.
GTV, Galco, galco.com, Galco Industrial Electronics, and Galco Industrial Electronics, Inc. are registered and/or pending registered trademarks under the U.S. Patent and TrademarkOffice, assumed names, registered domain names, and/or trade names of Galco Industrial Electronics, Inc., a Michigan corporation.

http://www.tjmitchell.com/stuart/saturnrosslyn.htmlLink to NASAFile for Download..
http://saturn.jpl.nasa.gov/multimedia/images/saturn/audio/pia07967-072504.wav
I just wanted to thank everyone for their input..good and bad...
I still have no idea yet what this is...I innocently raised it 12 tones and this is what appeared. I dont mean it to be 'scare-mungoring' its just to my mind (as a musician) it has definite patterns to the ear..whether speech, asteroids, magnetic waves, im not qualified to say, but all I know is...its an interesting pattern...JVD
Important info - Please read:
Speech patterns have been found in a radio signal released by NASA almost 3 years previously in 2004.
Judge the sound for yourself, it is a very bizarre anomaly but very much worth investigating.
Instructions:
1) Download and save the original WAV file from NASA/Cassini website:
http://saturn.jpl.nasa.gov/multimedia/images/saturn/audio/pia07967-072504.wav
2)Open an audio editor like Cool Edit or Sonar and raise the pitch/frequency of the file by 12 tones with the pitch shifter..
and there it is, speech patterns.
How can anyone explain this anomaly. Certainly NASA have no explanation for it after we presented the file to them for their opinion. SETI also dont know what make of it. What do you think?
SOURCE:
http://cassini.physics.uiowa.edu/space-audio/cassini/SKR2/
http://www.tjmitchell.com/stuart/saturnrosslyn.html
yours,
JVD

Federal Signal Corporation

Federal Signal Corporation is a global corporation with about 2,800 employees located in Oak Brook, Illinois. Federal Signal designs, develops and deploys solutions intended to protect people, property and the environment under brands including Federal Signal, Elgin, Bronto, Guzzler, Vactor, Victor, and Jetstream.

Federal Signal is best known for its variety of emergency lighting, industrial equipment, public safety solutions, and outdoor warning sirens.

Federal Signal was founded in Chicago, Illinois, in 1901 as Federal Electric Co. by John Goehst and James and John Gilchrist.Samuel Insull later acquired the Company. The Company went public in 1969 under the leadership of Robert T. Gilchrist. Currently, the company has 12 manufacturing facilities in six different countries.

History

Federal Signal was founded as the Federal Electric Company in 1901 by brothers John and James Gilchrist and parter John Goehst, manufacturing and selling store signs lit by incandescent lamps. By 1915, they began manufacturing and selling electrically-operated mechanical sirens (such as the Q Siren and the Model 66 Siren).

Power electronics

Power electronics is the application of solid-state electronics to the control and conversion of electric power. It also refers to a subject of research in electronic and electrical engineering which deals with the design, control, computation and integration of nonlinear, time-varying energy-processing electronic systems with fast dynamics.

FederalSignalsStreamline SLM500 SeriesLED Audible and VisualSignalIndicator presented by Katie Nyberg for Galco TV.
Buy the items featured in this video at 800-337-1720 or visit:http://www.galco.com/buy/Federal-Signal/SLM500A
The SLM500 series is a multifunctional LED beacon and sounder combination developed with a multiple input technology that allows for three separate forms of alarm: Alert, pre-alarm, and alarm that are controllable via independent electric contacts. This model benefits from two light effects: (steady and flashing), and 64 different tones that are selectable via dip-switch.
Sign up for Galco’s newsletter that features our newest products, our can't-miss deals, our best videos, and total access to Galco’s electronics expertise: http://www.galco.com/email/
Connect with us!
https://plus.google.com/+GalcoIndustrial
https://www.facebook.com/GalcoIndustrial
https://twitter.com/GalcoIndustrial
https://www.linkedin.com/company/galco-industrial-electronics
Don't forget to like and comment on this video, and subscribe to our channel!
Galco is a Factory Authorized Stocking Distributor for Over 150 Brands of Industrial Electrical & ElectronicAutomation, Controls and Component Products; On-Site and Send-In Repair Services for Industrial Control & Automation Products for Over 2,000 Brands; Engineered Systems Integration, Retrofits & Upgrades for VariableSpeedDrives, CNC, PLCSystems, Dynamometers & TestStandApplications. Visit us online at http:// www.galco.com or call us at 800-337-1720.
http://www.galco.com/safety
With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.
GTV, Galco, galco.com, Galco Industrial Electronics, and Galco Industrial Electronics, Inc. are registered and/or pending registered trademarks under the U.S. Patent and TrademarkOffice, assumed names, registered domain names, and/or trade names of Galco Industrial Electronics, Inc., a Michigan corporation.
LEGAL DISCLAIMER:
While we have made every attempt to ensure that the information provided is accurate and has been obtained from reliable sources, Galco is not responsible for any errors or omissions, or for the results obtained from the use of this information. All information is provided "as is", with no guarantee of completeness, accuracy, timeliness or of the results obtained from the use of this information, and without warranty of any kind, express or implied, including, but not limited to warranties of performance, merchantability and fitness for a particular purpose. At all times you should defer to the instructions and safety guidelines issued by the manufacturer. In no event will Galco, its agents or employees thereof be liable to you or anyone else for any decision made or action taken in reliance on the information provided to you or for any consequential, special or similar damages, even if advised of the possibility of such damages.

Audible - Sunday Bell [OFFICIAL AUDIO]

From the album Sky Signal. Purchase the CD / mp3 here:
http://www.polyvinylrecords.com/store/index.php?id=91&cartID=293

2:24

20Hz to 20kHz (Human Audio Spectrum)

20Hz to 20kHz (Human Audio Spectrum)

20Hz to 20kHz (Human Audio Spectrum)

Sinusoidal wave going trough entire human audio spectrum, starting at 20Hz and ending at 20kHz. Note that the frequency increases exponentially, the idea was to increase the frequency by constant fraction of currently played frequency rather than by a constant value (which would result in clearly noticeable fast change at lower frequencies and nearly no change at higher frequencies). Enjoy.
Note: This wave has the same volume level measured by acoustic pressure all the time, however human sound perception differs depending on frequency. For lower frequencies (below 1kHz) you might want to increase your volume, but don't forget to lower it later to avoid damage to your hearing.
If you don't hear anything below 40-50Hz even at full volume your audio hardware is probably incapable of playing lowest frequencies. You might want to try to listen on the headphones in such case. Also if you stop hearing sound somewhere between 10kHz - 20kHz - do not increase your volume for safety reasons. Every human hears a bit differently and have different hearing thresholds. Hearing range also changes with age. Younger people can usually hear higher frequencies.
For HD (High Definition) version of this test, which might yield better audio quality see: http://www.youtube.com/watch?v=H-iCZElJ8m0

A demonstration of the Federal Signal SelecTone Model300 Audible Signaling Device. Buy this featured item at 800-337-1720 or follow this link: http://www.galco.com/shop/300-Federal-Signal-Sounders-Audible-Signaling-Devices?source=YouTubeText
The FederalSignal SelecTone® Model 300 is a lightweight and compact, solid‑state audible signaling device designed to amplify a pre‑selected tone over existing ambient noises. The speaker cone and projector are made of spun aluminum. The internal amplifier circuitry and tone module are contained in a housing of die‑cast aluminum. Dust‑ and moisture‑proof gasketing provides protection from the elements. All external components are sealed with gray enamel paint.
Features of the 300 SelecTone:
- 12 VDC/36 VDC/250 VDC
- Compatible with UTMToneModule
- 110 dB at 10 Feet
- 3R TypeEnclosure
- UL; cUL; CSA Approvals
The Model 300 is designed for applications which have 12, 36, or 250VDC power supplies. The 250VDC version is UL and cUL Listed and CSA Certified. All models are rated Type 3R for indoor/outdoor use.
To view more Federal Signal Audible Signaling Devices follow this link: http://www.galco.com/shop/Federal-Signal-Sounders-Audible-Signaling-Devices?source=YouTubeText
And to see the full line of Federal Signal products available, please go to: http://www.galco.com/find/Federal-Signal?source=YouTubeText
Galco is a Factory Authorized Stocking Distributor for Over 150 Brands of Industrial Electrical & ElectronicAutomation, Controls and Component Products; On-Site and Send-In Repair Services for Industrial Control & Automation Products for Over 2,000 Brands; Engineered Systems Integration, Retrofits & Upgrades for VariableSpeedDrives, CNC, PLCSystems, Dynamometers & TestStandApplications. Visit us online at http:// www.galco.com or call us at800-337-1720.
http://www.galco.com/safety
With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.
GTV, Galco, galco.com, Galco Industrial Electronics, and Galco Industrial Electronics, Inc. are registered and/or pending registered trademarks under the U.S. Patent and TrademarkOffice, assumed names, registered domain names, and/or trade names of Galco Industrial Electronics, Inc., a Michigan corporation.

Alien Speech? Found in NASA's Saturn Radio Signal

http://www.tjmitchell.com/stuart/saturnrosslyn.htmlLink to NASAFile for Download..
http://saturn.jpl.nasa.gov/multimedia/images/saturn/audio/pia07967-072504.wav
I just wanted to thank everyone for their input..good and bad...
I still have no idea yet what this is...I innocently raised it 12 tones and this is what appeared. I dont mean it to be 'scare-mungoring' its just to my mind (as a musician) it has definite patterns to the ear..whether speech, asteroids, magnetic waves, im not qualified to say, but all I know is...its an interesting pattern...JVD
Important info - Please read:
Speech patterns have been found in a radio signal released by NASA almost 3 years previously in 2004.
Judge the sound for yourself, it is a very bizarre anomaly but very much worth investigating.
Instructions:
1) Download and save the original WAV file from NASA/Cassini website:
http://saturn.jpl.nasa.gov/multimedia/images/saturn/audio/pia07967-072504.wav
2)Open an audio editor like Cool Edit or Sonar and raise the pitch/frequency of the file by 12 tones with the pitch shifter..
and there it is, speech patterns.
How can anyone explain this anomaly. Certainly NASA have no explanation for it after we presented the file to them for their opinion. SETI also dont know what make of it. What do you think?
SOURCE:
http://cassini.physics.uiowa.edu/space-audio/cassini/SKR2/
http://www.tjmitchell.com/stuart/saturnrosslyn.html
yours,
JVD

20:54

Matlab demonstration - basic signal manipulation using audio signals

Matlab demonstration - basic signal manipulation using audio signals

Matlab demonstration - basic signal manipulation using audio signals

Analog vs. Digital As Fast As Possible

What Is the difference between analog and digital, and how do they work together to make modern life possible?
Audible message: Thanks to Audible for supporting our channel. Get a free 30 day trial at http://www.audible.com/techquickie.
Follow: http://twitter.com/luke_lafr
Join the community: http://linustechtips.com
License for image used in this video: https://creativecommons.org/licenses/by/3.0/legalcode

Federal SignalAV1Flashing Combination Audible VisualSignal presented by Katie Rydzewski for Galco TV. Buy the item featured in this video at 800-337-1720 or visit: http://www.galco.com/shop/AV1-Federal-Signal-Combination-Signaling-Devices-Signaling-Devices?source=YouTubeText
Model AV1 combination audible/visual signal. The AV1 features a 100% polycarbonate housing that is rated for Type 3R rain‑tight applications. Available dome colors include amber, blue, clear, green and red.
The integrated buzzer provides 85dB output at 10 feet (95dB @ 1 meter). The sounder is synchronized to buzz at the same rate as the visual signal — 75 times per minute.
The AV1 comes in two voltage variations: 24VDC and 120VAC. Each unit is factory assembled with two color‑coded leads. The AV1 is UL and cUL Listed and CSACertified.
AV1 Series Features:
- 24 VDC or 120VAC
- 5 DomeColors
- 3R Type Enclosure
- Variety of Mounting Options
- UL; cUL; CSA Approvals
To find more Federal Signal AV1 Series Audible/Visual Signals visit: http://www.galco.com/shop/AV1-Federal-Signal-Combination-Signaling-Devices-Signaling-Devices?source=YouTubeText
For more Federal Signal Combination Audible/Visual Signals go to: http://www.galco.com/shop/Federal-Signal-Combination-Signaling-Devices-Signaling-Devices?source=YouTubeText
And to find more Federal Signal Signaling Devices go to: http://www.galco.com/get/Federal-Signal-Signaling-Devices?source=YouTubeText
For the full line of Federal Signal Products visit: http://www.galco.com/find/Federal-Signal?source=YouTubeText
Galco is a Factory Authorized Stocking Distributor for Over 150 Brands of Industrial Electrical & ElectronicAutomation, Controls and Component Products; On-Site and Send-In Repair Services for Industrial Control & Automation Products for Over 2,000 Brands; Engineered Systems Integration, Retrofits & Upgrades for VariableSpeedDrives, CNC, PLCSystems, Dynamometers & TestStandApplications. Visit us online at http:// www.galco.com or call us at 800-337-1720.
http://www.galco.com/safety
With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.
GTV, Galco, galco.com, Galco Industrial Electronics, and Galco Industrial Electronics, Inc. are registered and/or pending registered trademarks under the U.S. Patent and TrademarkOffice, assumed names, registered domain names, and/or trade names of Galco Industrial Electronics, Inc., a Michigan corporation.
VIDEO TRANSCRIPT:
Welcome to G-TV
Today I will be showing you the AV1 Flashing Combination Audible/Visual Signal by Federal Signal.
Federal Signal Model AV1 combination audible/visual signal features a 100% polycarbonate housing that is rated for Type 3R rain-tight applications. The AV1 design provides three mounting configurations, and is available in amber, blue, clear, green and red.
The black base will accommodate mounting to a half inch NPT pipe, a 4-inch octagonal electrical box or any flat surface. The surface mount gasket serves as a template for preparing a flat surface with appropriate mounting holes.
All AV1 units feature a unique twist and lock dome to allow tool-free access to the incandescent lamp. The Fresnel lensing provides superior visibility in all directions, and the integrated buzzer provides 85dB output at 10 feet. The sounder is synchronized to buzz at the same rate as the visual signal, which is 75 times per minute. Federal Signals AV1 comes in two voltage variations: 24 volts DC and 120 volts AC. Each unit is factory assembled with two color-coded leads. If desired, the user can remove the leads and connect directly to the terminal block located in the base of the unit.
The AV1 is UL and cUL Listed and CSA Certified.
Federal Signals AV1 Flashing Combination Audible/Visual Signal along with thousands of other parts and services are available at Galco.com

Audible Traffic Signals

I wanted to take a look at something that assists visually impaired students and faculty on our campus (Michigan State University), so I went to FarmLane, a busy thoroughfare. There I found audible traffic signals that guide visually impaired people across the street. The audible traffic signals tell the pedestrian which street to cross, how much time they have to do so, and when not to cross.

4:05

Build an audible VHF/UHF handheld transmitter tester in 10 minutes

Build an audible VHF/UHF handheld transmitter tester in 10 minutes

Build an audible VHF/UHF handheld transmitter tester in 10 minutes

In 10 minutes time using just three parts you could have your own audible transmitter tester. Operates with VHF/UHF transceivers up to about 500 MHz it gives an audio indication if the transceiver is transmitting. Useful for testing equipment, radio direction finding, testing directive antennas and more.

http://www.larsonelectronics.com/p-105987-hazardous-location-signal-light-w-audible-alarm-class-1-div-2-4-colors-avail-steady-or-strobe.aspx?utm_source=Youtube&utm_medium=HAL-TL-1X10W-C-PA&utm_term=Lighting&utm_campaign=Youtube-Videos
Made in the USA
The HAL-TL-1X10W-C-PA Class 1 Division 2LEDSignalStackLight with Audible Horn from Larson Electronics is approved for use in hazardous environments where explosive and flammable gases, vapors, and dusts stand a potential to exist, as well as wet locations and marine environments. This vapor proof signal stack light light is designed for routing traffic in industrial refueling stations and processing status indications in manufacturing facilities.
The HAL-TL-1X10W-C-PA hazardous location signal stack LED light with audible horn an signal/traffic light that offers one 10 watt LED lamp in red, amber, blue, green or white light output, other custom configurations available upon request. This unit is rated for Class 1 Division 2 and Class 2 Division 2 work environments, T2D temperature rated, weatherproof/dust-proof, and NEMA 4X and marine rated for wet environments. These indicator lights have 50,000 hours of operational life and the unit works on 120/240 volts AC or 24 volts DC configurations for standard or low voltage operation.
This hazardous area fixture is configured ready burn, strobe, or ready burn and strobe combination and each LED lamp offers exceptional 1050 lumen output each. The explosion proof audible alarm setup sounds a unique tone per the user setting. Multiple units can be configured for different lamp colors and different tones, providing operators in hazardous locations with an effective and powerful alert/signal system that can withstand demanding conditions and be heard over the operation of industrial machinery and equipment. A NEMA 4X rated explosion proof junction box protects the internal wiring and can be tapped in order to connect this stack light to power sources. This explosion proof signal light is durable, can operate in any weather condition, and is rated for Class 1 Division 2, Groups C and D and Class 2 Division 2, Group F areas where flammable gas and dust have potential to exist.
The 10 watt lamp in this hazardous location stack light provides high output in visible signal colored LED lamp, with a lifespan of 50,000 hours, is protected by durable heat treated glass globes and globe guards for added durability, and offer cool operation and clean, bright output surpassing that of 100Watt incandescent indicator lamps. The LED lamp is colored LEDs instead of colored globes, providing more light output. We offer strobe or steady burn lamps for this fixture. The light housing is constructed of a non-metallic polymer that is chemical resistant and flame retardant while the horn is made of fiberglass.
This stack light is equipped an explosion proof horn. Attached to the far end of the fixture, this audible horn provides operators with up to 5 different tones that can reach a peak output of 110dBA, powerful enough to be heard over industrial operations. There is no dimming or volume control for the lights or horns.
Wiring is through a 3/4" NPT conduit access hub. The unit can be ordered in 120V or 240V AC configuration for use with standard line voltages or 24V DC for low voltage use. Mounting is provided by a heavy gauge aluminum base with predrilled holes designed to be bolted to walls and flat surfaces for permanent and secure attachment. Power is provided by individual conductors to allow independent operation of each lamp and tone combination. Operators can tap the C1D1 junction box in order to connect to a power source.
This 20 Watt dual lamp hazardous location signal stack LED light with alarm system is an ideal fixture indicator for manufacturing facilities, routing shipping lanes, and any hazardous work area where status indicators and audible alarms are necessary.
#larsonlights

Audible motorcycle/scooter turn signal indicator.

FederalSignalsStreamline SLM500 SeriesLED Audible and VisualSignalIndicator presented by Katie Nyberg for Galco TV.
Buy the items featured in this video at 800-337-1720 or visit:http://www.galco.com/buy/Federal-Signal/SLM500A
The SLM500 series is a multifunctional LED beacon and sounder combination developed with a multiple input technology that allows for three separate forms of alarm: Alert, pre-alarm, and alarm that are controllable via independent electric contacts. This model benefits from two light effects: (steady and flashing), and 64 different tones that are selectable via dip-switch.
Sign up for Galco’s newsletter that features our newest products, our can't-miss deals, our best videos, and total access to Galco’s electronics expertise: http://www.galco.com/email/
Connec...

Audible - Sunday Bell [OFFICIAL AUDIO]

From the album Sky Signal. Purchase the CD / mp3 here:
http://www.polyvinylrecords.com/store/index.php?id=91&cartID=293

published: 09 Dec 2010

20Hz to 20kHz (Human Audio Spectrum)

Sinusoidal wave going trough entire human audio spectrum, starting at 20Hz and ending at 20kHz. Note that the frequency increases exponentially, the idea was to increase the frequency by constant fraction of currently played frequency rather than by a constant value (which would result in clearly noticeable fast change at lower frequencies and nearly no change at higher frequencies). Enjoy.
Note: This wave has the same volume level measured by acoustic pressure all the time, however human sound perception differs depending on frequency. For lower frequencies (below 1kHz) you might want to increase your volume, but don't forget to lower it later to avoid damage to your hearing.
If you don't hear anything below 40-50Hz even at full volume your audio hardware is probably incapable of playi...

A demonstration of the Federal Signal SelecTone Model300 Audible Signaling Device. Buy this featured item at 800-337-1720 or follow this link: http://www.galco.com/shop/300-Federal-Signal-Sounders-Audible-Signaling-Devices?source=YouTubeText
The FederalSignal SelecTone® Model 300 is a lightweight and compact, solid‑state audible signaling device designed to amplify a pre‑selected tone over existing ambient noises. The speaker cone and projector are made of spun aluminum. The internal amplifier circuitry and tone module are contained in a housing of die‑cast aluminum. Dust‑ and moisture‑proof gasketing provides protection from the elements. All external components are sealed with gray enamel paint.
Features of the 300 SelecTone:
- 12 VDC/36 VDC/250 VDC
- Compatible with UTMTone M...

Alien Speech? Found in NASA's Saturn Radio Signal

http://www.tjmitchell.com/stuart/saturnrosslyn.htmlLink to NASAFile for Download..
http://saturn.jpl.nasa.gov/multimedia/images/saturn/audio/pia07967-072504.wav
I just wanted to thank everyone for their input..good and bad...
I still have no idea yet what this is...I innocently raised it 12 tones and this is what appeared. I dont mean it to be 'scare-mungoring' its just to my mind (as a musician) it has definite patterns to the ear..whether speech, asteroids, magnetic waves, im not qualified to say, but all I know is...its an interesting pattern...JVD
Important info - Please read:
Speech patterns have been found in a radio signal released by NASA almost 3 years previously in 2004.
Judge the sound for yourself, it is a very bizarre anomaly but very much worth investigating.
Instructio...

published: 30 Jun 2007

Matlab demonstration - basic signal manipulation using audio signals

Analog vs. Digital As Fast As Possible

What Is the difference between analog and digital, and how do they work together to make modern life possible?
Audible message: Thanks to Audible for supporting our channel. Get a free 30 day trial at http://www.audible.com/techquickie.
Follow: http://twitter.com/luke_lafr
Join the community: http://linustechtips.com
License for image used in this video: https://creativecommons.org/licenses/by/3.0/legalcode

Federal SignalAV1Flashing Combination Audible VisualSignal presented by Katie Rydzewski for Galco TV. Buy the item featured in this video at 800-337-1720 or visit: http://www.galco.com/shop/AV1-Federal-Signal-Combination-Signaling-Devices-Signaling-Devices?source=YouTubeText
Model AV1 combination audible/visual signal. The AV1 features a 100% polycarbonate housing that is rated for Type 3R rain‑tight applications. Available dome colors include amber, blue, clear, green and red.
The integrated buzzer provides 85dB output at 10 feet (95dB @ 1 meter). The sounder is synchronized to buzz at the same rate as the visual signal — 75 times per minute.
The AV1 comes in two voltage variations: 24VDC and 120VAC. Each unit is factory assembled with two color‑coded leads. The AV1 is UL and cUL Li...

Audible Traffic Signals

I wanted to take a look at something that assists visually impaired students and faculty on our campus (Michigan State University), so I went to FarmLane, a busy thoroughfare. There I found audible traffic signals that guide visually impaired people across the street. The audible traffic signals tell the pedestrian which street to cross, how much time they have to do so, and when not to cross.

published: 30 Sep 2008

Build an audible VHF/UHF handheld transmitter tester in 10 minutes

In 10 minutes time using just three parts you could have your own audible transmitter tester. Operates with VHF/UHF transceivers up to about 500 MHz it gives an audio indication if the transceiver is transmitting. Useful for testing equipment, radio direction finding, testing directive antennas and more.

http://www.larsonelectronics.com/p-105987-hazardous-location-signal-light-w-audible-alarm-class-1-div-2-4-colors-avail-steady-or-strobe.aspx?utm_source=Youtube&utm_medium=HAL-TL-1X10W-C-PA&utm_term=Lighting&utm_campaign=Youtube-Videos
Made in the USA
The HAL-TL-1X10W-C-PA Class 1 Division 2LEDSignalStackLight with Audible Horn from Larson Electronics is approved for use in hazardous environments where explosive and flammable gases, vapors, and dusts stand a potential to exist, as well as wet locations and marine environments. This vapor proof signal stack light light is designed for routing traffic in industrial refueling stations and processing status indications in manufacturing facilities.
The HAL-TL-1X10W-C-PA hazardous location signal stack LED light with audible horn an signal...

FederalSignalsStreamline SLM500 SeriesLED Audible and VisualSignalIndicator presented by Katie Nyberg for Galco TV.
Buy the items featured in this video at 800-337-1720 or visit:http://www.galco.com/buy/Federal-Signal/SLM500A
The SLM500 series is a multifunctional LED beacon and sounder combination developed with a multiple input technology that allows for three separate forms of alarm: Alert, pre-alarm, and alarm that are controllable via independent electric contacts. This model benefits from two light effects: (steady and flashing), and 64 different tones that are selectable via dip-switch.
Sign up for Galco’s newsletter that features our newest products, our can't-miss deals, our best videos, and total access to Galco’s electronics expertise: http://www.galco.com/email/
Connect with us!
https://plus.google.com/+GalcoIndustrial
https://www.facebook.com/GalcoIndustrial
https://twitter.com/GalcoIndustrial
https://www.linkedin.com/company/galco-industrial-electronics
Don't forget to like and comment on this video, and subscribe to our channel!
Galco is a Factory Authorized Stocking Distributor for Over 150 Brands of Industrial Electrical & ElectronicAutomation, Controls and Component Products; On-Site and Send-In Repair Services for Industrial Control & Automation Products for Over 2,000 Brands; Engineered Systems Integration, Retrofits & Upgrades for VariableSpeedDrives, CNC, PLCSystems, Dynamometers & TestStandApplications. Visit us online at http:// www.galco.com or call us at 800-337-1720.
http://www.galco.com/safety
With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.
GTV, Galco, galco.com, Galco Industrial Electronics, and Galco Industrial Electronics, Inc. are registered and/or pending registered trademarks under the U.S. Patent and TrademarkOffice, assumed names, registered domain names, and/or trade names of Galco Industrial Electronics, Inc., a Michigan corporation.
LEGAL DISCLAIMER:
While we have made every attempt to ensure that the information provided is accurate and has been obtained from reliable sources, Galco is not responsible for any errors or omissions, or for the results obtained from the use of this information. All information is provided "as is", with no guarantee of completeness, accuracy, timeliness or of the results obtained from the use of this information, and without warranty of any kind, express or implied, including, but not limited to warranties of performance, merchantability and fitness for a particular purpose. At all times you should defer to the instructions and safety guidelines issued by the manufacturer. In no event will Galco, its agents or employees thereof be liable to you or anyone else for any decision made or action taken in reliance on the information provided to you or for any consequential, special or similar damages, even if advised of the possibility of such damages.

FederalSignalsStreamline SLM500 SeriesLED Audible and VisualSignalIndicator presented by Katie Nyberg for Galco TV.
Buy the items featured in this video at 800-337-1720 or visit:http://www.galco.com/buy/Federal-Signal/SLM500A
The SLM500 series is a multifunctional LED beacon and sounder combination developed with a multiple input technology that allows for three separate forms of alarm: Alert, pre-alarm, and alarm that are controllable via independent electric contacts. This model benefits from two light effects: (steady and flashing), and 64 different tones that are selectable via dip-switch.
Sign up for Galco’s newsletter that features our newest products, our can't-miss deals, our best videos, and total access to Galco’s electronics expertise: http://www.galco.com/email/
Connect with us!
https://plus.google.com/+GalcoIndustrial
https://www.facebook.com/GalcoIndustrial
https://twitter.com/GalcoIndustrial
https://www.linkedin.com/company/galco-industrial-electronics
Don't forget to like and comment on this video, and subscribe to our channel!
Galco is a Factory Authorized Stocking Distributor for Over 150 Brands of Industrial Electrical & ElectronicAutomation, Controls and Component Products; On-Site and Send-In Repair Services for Industrial Control & Automation Products for Over 2,000 Brands; Engineered Systems Integration, Retrofits & Upgrades for VariableSpeedDrives, CNC, PLCSystems, Dynamometers & TestStandApplications. Visit us online at http:// www.galco.com or call us at 800-337-1720.
http://www.galco.com/safety
With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.
GTV, Galco, galco.com, Galco Industrial Electronics, and Galco Industrial Electronics, Inc. are registered and/or pending registered trademarks under the U.S. Patent and TrademarkOffice, assumed names, registered domain names, and/or trade names of Galco Industrial Electronics, Inc., a Michigan corporation.
LEGAL DISCLAIMER:
While we have made every attempt to ensure that the information provided is accurate and has been obtained from reliable sources, Galco is not responsible for any errors or omissions, or for the results obtained from the use of this information. All information is provided "as is", with no guarantee of completeness, accuracy, timeliness or of the results obtained from the use of this information, and without warranty of any kind, express or implied, including, but not limited to warranties of performance, merchantability and fitness for a particular purpose. At all times you should defer to the instructions and safety guidelines issued by the manufacturer. In no event will Galco, its agents or employees thereof be liable to you or anyone else for any decision made or action taken in reliance on the information provided to you or for any consequential, special or similar damages, even if advised of the possibility of such damages.

Sinusoidal wave going trough entire human audio spectrum, starting at 20Hz and ending at 20kHz. Note that the frequency increases exponentially, the idea was to increase the frequency by constant fraction of currently played frequency rather than by a constant value (which would result in clearly noticeable fast change at lower frequencies and nearly no change at higher frequencies). Enjoy.
Note: This wave has the same volume level measured by acoustic pressure all the time, however human sound perception differs depending on frequency. For lower frequencies (below 1kHz) you might want to increase your volume, but don't forget to lower it later to avoid damage to your hearing.
If you don't hear anything below 40-50Hz even at full volume your audio hardware is probably incapable of playing lowest frequencies. You might want to try to listen on the headphones in such case. Also if you stop hearing sound somewhere between 10kHz - 20kHz - do not increase your volume for safety reasons. Every human hears a bit differently and have different hearing thresholds. Hearing range also changes with age. Younger people can usually hear higher frequencies.
For HD (High Definition) version of this test, which might yield better audio quality see: http://www.youtube.com/watch?v=H-iCZElJ8m0

Sinusoidal wave going trough entire human audio spectrum, starting at 20Hz and ending at 20kHz. Note that the frequency increases exponentially, the idea was to increase the frequency by constant fraction of currently played frequency rather than by a constant value (which would result in clearly noticeable fast change at lower frequencies and nearly no change at higher frequencies). Enjoy.
Note: This wave has the same volume level measured by acoustic pressure all the time, however human sound perception differs depending on frequency. For lower frequencies (below 1kHz) you might want to increase your volume, but don't forget to lower it later to avoid damage to your hearing.
If you don't hear anything below 40-50Hz even at full volume your audio hardware is probably incapable of playing lowest frequencies. You might want to try to listen on the headphones in such case. Also if you stop hearing sound somewhere between 10kHz - 20kHz - do not increase your volume for safety reasons. Every human hears a bit differently and have different hearing thresholds. Hearing range also changes with age. Younger people can usually hear higher frequencies.
For HD (High Definition) version of this test, which might yield better audio quality see: http://www.youtube.com/watch?v=H-iCZElJ8m0

A demonstration of the Federal Signal SelecTone Model300 Audible Signaling Device. Buy this featured item at 800-337-1720 or follow this link: http://www.galco.com/shop/300-Federal-Signal-Sounders-Audible-Signaling-Devices?source=YouTubeText
The FederalSignal SelecTone® Model 300 is a lightweight and compact, solid‑state audible signaling device designed to amplify a pre‑selected tone over existing ambient noises. The speaker cone and projector are made of spun aluminum. The internal amplifier circuitry and tone module are contained in a housing of die‑cast aluminum. Dust‑ and moisture‑proof gasketing provides protection from the elements. All external components are sealed with gray enamel paint.
Features of the 300 SelecTone:
- 12 VDC/36 VDC/250 VDC
- Compatible with UTMToneModule
- 110 dB at 10 Feet
- 3R TypeEnclosure
- UL; cUL; CSA Approvals
The Model 300 is designed for applications which have 12, 36, or 250VDC power supplies. The 250VDC version is UL and cUL Listed and CSA Certified. All models are rated Type 3R for indoor/outdoor use.
To view more Federal Signal Audible Signaling Devices follow this link: http://www.galco.com/shop/Federal-Signal-Sounders-Audible-Signaling-Devices?source=YouTubeText
And to see the full line of Federal Signal products available, please go to: http://www.galco.com/find/Federal-Signal?source=YouTubeText
Galco is a Factory Authorized Stocking Distributor for Over 150 Brands of Industrial Electrical & ElectronicAutomation, Controls and Component Products; On-Site and Send-In Repair Services for Industrial Control & Automation Products for Over 2,000 Brands; Engineered Systems Integration, Retrofits & Upgrades for VariableSpeedDrives, CNC, PLCSystems, Dynamometers & TestStandApplications. Visit us online at http:// www.galco.com or call us at800-337-1720.
http://www.galco.com/safety
With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.
GTV, Galco, galco.com, Galco Industrial Electronics, and Galco Industrial Electronics, Inc. are registered and/or pending registered trademarks under the U.S. Patent and TrademarkOffice, assumed names, registered domain names, and/or trade names of Galco Industrial Electronics, Inc., a Michigan corporation.

A demonstration of the Federal Signal SelecTone Model300 Audible Signaling Device. Buy this featured item at 800-337-1720 or follow this link: http://www.galco.com/shop/300-Federal-Signal-Sounders-Audible-Signaling-Devices?source=YouTubeText
The FederalSignal SelecTone® Model 300 is a lightweight and compact, solid‑state audible signaling device designed to amplify a pre‑selected tone over existing ambient noises. The speaker cone and projector are made of spun aluminum. The internal amplifier circuitry and tone module are contained in a housing of die‑cast aluminum. Dust‑ and moisture‑proof gasketing provides protection from the elements. All external components are sealed with gray enamel paint.
Features of the 300 SelecTone:
- 12 VDC/36 VDC/250 VDC
- Compatible with UTMToneModule
- 110 dB at 10 Feet
- 3R TypeEnclosure
- UL; cUL; CSA Approvals
The Model 300 is designed for applications which have 12, 36, or 250VDC power supplies. The 250VDC version is UL and cUL Listed and CSA Certified. All models are rated Type 3R for indoor/outdoor use.
To view more Federal Signal Audible Signaling Devices follow this link: http://www.galco.com/shop/Federal-Signal-Sounders-Audible-Signaling-Devices?source=YouTubeText
And to see the full line of Federal Signal products available, please go to: http://www.galco.com/find/Federal-Signal?source=YouTubeText
Galco is a Factory Authorized Stocking Distributor for Over 150 Brands of Industrial Electrical & ElectronicAutomation, Controls and Component Products; On-Site and Send-In Repair Services for Industrial Control & Automation Products for Over 2,000 Brands; Engineered Systems Integration, Retrofits & Upgrades for VariableSpeedDrives, CNC, PLCSystems, Dynamometers & TestStandApplications. Visit us online at http:// www.galco.com or call us at800-337-1720.
http://www.galco.com/safety
With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.
GTV, Galco, galco.com, Galco Industrial Electronics, and Galco Industrial Electronics, Inc. are registered and/or pending registered trademarks under the U.S. Patent and TrademarkOffice, assumed names, registered domain names, and/or trade names of Galco Industrial Electronics, Inc., a Michigan corporation.

http://www.tjmitchell.com/stuart/saturnrosslyn.htmlLink to NASAFile for Download..
http://saturn.jpl.nasa.gov/multimedia/images/saturn/audio/pia07967-072504.wav
I just wanted to thank everyone for their input..good and bad...
I still have no idea yet what this is...I innocently raised it 12 tones and this is what appeared. I dont mean it to be 'scare-mungoring' its just to my mind (as a musician) it has definite patterns to the ear..whether speech, asteroids, magnetic waves, im not qualified to say, but all I know is...its an interesting pattern...JVD
Important info - Please read:
Speech patterns have been found in a radio signal released by NASA almost 3 years previously in 2004.
Judge the sound for yourself, it is a very bizarre anomaly but very much worth investigating.
Instructions:
1) Download and save the original WAV file from NASA/Cassini website:
http://saturn.jpl.nasa.gov/multimedia/images/saturn/audio/pia07967-072504.wav
2)Open an audio editor like Cool Edit or Sonar and raise the pitch/frequency of the file by 12 tones with the pitch shifter..
and there it is, speech patterns.
How can anyone explain this anomaly. Certainly NASA have no explanation for it after we presented the file to them for their opinion. SETI also dont know what make of it. What do you think?
SOURCE:
http://cassini.physics.uiowa.edu/space-audio/cassini/SKR2/
http://www.tjmitchell.com/stuart/saturnrosslyn.html
yours,
JVD

http://www.tjmitchell.com/stuart/saturnrosslyn.htmlLink to NASAFile for Download..
http://saturn.jpl.nasa.gov/multimedia/images/saturn/audio/pia07967-072504.wav
I just wanted to thank everyone for their input..good and bad...
I still have no idea yet what this is...I innocently raised it 12 tones and this is what appeared. I dont mean it to be 'scare-mungoring' its just to my mind (as a musician) it has definite patterns to the ear..whether speech, asteroids, magnetic waves, im not qualified to say, but all I know is...its an interesting pattern...JVD
Important info - Please read:
Speech patterns have been found in a radio signal released by NASA almost 3 years previously in 2004.
Judge the sound for yourself, it is a very bizarre anomaly but very much worth investigating.
Instructions:
1) Download and save the original WAV file from NASA/Cassini website:
http://saturn.jpl.nasa.gov/multimedia/images/saturn/audio/pia07967-072504.wav
2)Open an audio editor like Cool Edit or Sonar and raise the pitch/frequency of the file by 12 tones with the pitch shifter..
and there it is, speech patterns.
How can anyone explain this anomaly. Certainly NASA have no explanation for it after we presented the file to them for their opinion. SETI also dont know what make of it. What do you think?
SOURCE:
http://cassini.physics.uiowa.edu/space-audio/cassini/SKR2/
http://www.tjmitchell.com/stuart/saturnrosslyn.html
yours,
JVD

Analog vs. Digital As Fast As Possible

What Is the difference between analog and digital, and how do they work together to make modern life possible?
Audible message: Thanks to Audible for supportin...

What Is the difference between analog and digital, and how do they work together to make modern life possible?
Audible message: Thanks to Audible for supporting our channel. Get a free 30 day trial at http://www.audible.com/techquickie.
Follow: http://twitter.com/luke_lafr
Join the community: http://linustechtips.com
License for image used in this video: https://creativecommons.org/licenses/by/3.0/legalcode

What Is the difference between analog and digital, and how do they work together to make modern life possible?
Audible message: Thanks to Audible for supporting our channel. Get a free 30 day trial at http://www.audible.com/techquickie.
Follow: http://twitter.com/luke_lafr
Join the community: http://linustechtips.com
License for image used in this video: https://creativecommons.org/licenses/by/3.0/legalcode

Federal SignalAV1Flashing Combination Audible VisualSignal presented by Katie Rydzewski for Galco TV. Buy the item featured in this video at 800-337-1720 or visit: http://www.galco.com/shop/AV1-Federal-Signal-Combination-Signaling-Devices-Signaling-Devices?source=YouTubeText
Model AV1 combination audible/visual signal. The AV1 features a 100% polycarbonate housing that is rated for Type 3R rain‑tight applications. Available dome colors include amber, blue, clear, green and red.
The integrated buzzer provides 85dB output at 10 feet (95dB @ 1 meter). The sounder is synchronized to buzz at the same rate as the visual signal — 75 times per minute.
The AV1 comes in two voltage variations: 24VDC and 120VAC. Each unit is factory assembled with two color‑coded leads. The AV1 is UL and cUL Listed and CSACertified.
AV1 Series Features:
- 24 VDC or 120VAC
- 5 DomeColors
- 3R Type Enclosure
- Variety of Mounting Options
- UL; cUL; CSA Approvals
To find more Federal Signal AV1 Series Audible/Visual Signals visit: http://www.galco.com/shop/AV1-Federal-Signal-Combination-Signaling-Devices-Signaling-Devices?source=YouTubeText
For more Federal Signal Combination Audible/Visual Signals go to: http://www.galco.com/shop/Federal-Signal-Combination-Signaling-Devices-Signaling-Devices?source=YouTubeText
And to find more Federal Signal Signaling Devices go to: http://www.galco.com/get/Federal-Signal-Signaling-Devices?source=YouTubeText
For the full line of Federal Signal Products visit: http://www.galco.com/find/Federal-Signal?source=YouTubeText
Galco is a Factory Authorized Stocking Distributor for Over 150 Brands of Industrial Electrical & ElectronicAutomation, Controls and Component Products; On-Site and Send-In Repair Services for Industrial Control & Automation Products for Over 2,000 Brands; Engineered Systems Integration, Retrofits & Upgrades for VariableSpeedDrives, CNC, PLCSystems, Dynamometers & TestStandApplications. Visit us online at http:// www.galco.com or call us at 800-337-1720.
http://www.galco.com/safety
With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.
GTV, Galco, galco.com, Galco Industrial Electronics, and Galco Industrial Electronics, Inc. are registered and/or pending registered trademarks under the U.S. Patent and TrademarkOffice, assumed names, registered domain names, and/or trade names of Galco Industrial Electronics, Inc., a Michigan corporation.
VIDEO TRANSCRIPT:
Welcome to G-TV
Today I will be showing you the AV1 Flashing Combination Audible/Visual Signal by Federal Signal.
Federal Signal Model AV1 combination audible/visual signal features a 100% polycarbonate housing that is rated for Type 3R rain-tight applications. The AV1 design provides three mounting configurations, and is available in amber, blue, clear, green and red.
The black base will accommodate mounting to a half inch NPT pipe, a 4-inch octagonal electrical box or any flat surface. The surface mount gasket serves as a template for preparing a flat surface with appropriate mounting holes.
All AV1 units feature a unique twist and lock dome to allow tool-free access to the incandescent lamp. The Fresnel lensing provides superior visibility in all directions, and the integrated buzzer provides 85dB output at 10 feet. The sounder is synchronized to buzz at the same rate as the visual signal, which is 75 times per minute. Federal Signals AV1 comes in two voltage variations: 24 volts DC and 120 volts AC. Each unit is factory assembled with two color-coded leads. If desired, the user can remove the leads and connect directly to the terminal block located in the base of the unit.
The AV1 is UL and cUL Listed and CSA Certified.
Federal Signals AV1 Flashing Combination Audible/Visual Signal along with thousands of other parts and services are available at Galco.com

Federal SignalAV1Flashing Combination Audible VisualSignal presented by Katie Rydzewski for Galco TV. Buy the item featured in this video at 800-337-1720 or visit: http://www.galco.com/shop/AV1-Federal-Signal-Combination-Signaling-Devices-Signaling-Devices?source=YouTubeText
Model AV1 combination audible/visual signal. The AV1 features a 100% polycarbonate housing that is rated for Type 3R rain‑tight applications. Available dome colors include amber, blue, clear, green and red.
The integrated buzzer provides 85dB output at 10 feet (95dB @ 1 meter). The sounder is synchronized to buzz at the same rate as the visual signal — 75 times per minute.
The AV1 comes in two voltage variations: 24VDC and 120VAC. Each unit is factory assembled with two color‑coded leads. The AV1 is UL and cUL Listed and CSACertified.
AV1 Series Features:
- 24 VDC or 120VAC
- 5 DomeColors
- 3R Type Enclosure
- Variety of Mounting Options
- UL; cUL; CSA Approvals
To find more Federal Signal AV1 Series Audible/Visual Signals visit: http://www.galco.com/shop/AV1-Federal-Signal-Combination-Signaling-Devices-Signaling-Devices?source=YouTubeText
For more Federal Signal Combination Audible/Visual Signals go to: http://www.galco.com/shop/Federal-Signal-Combination-Signaling-Devices-Signaling-Devices?source=YouTubeText
And to find more Federal Signal Signaling Devices go to: http://www.galco.com/get/Federal-Signal-Signaling-Devices?source=YouTubeText
For the full line of Federal Signal Products visit: http://www.galco.com/find/Federal-Signal?source=YouTubeText
Galco is a Factory Authorized Stocking Distributor for Over 150 Brands of Industrial Electrical & ElectronicAutomation, Controls and Component Products; On-Site and Send-In Repair Services for Industrial Control & Automation Products for Over 2,000 Brands; Engineered Systems Integration, Retrofits & Upgrades for VariableSpeedDrives, CNC, PLCSystems, Dynamometers & TestStandApplications. Visit us online at http:// www.galco.com or call us at 800-337-1720.
http://www.galco.com/safety
With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.
GTV, Galco, galco.com, Galco Industrial Electronics, and Galco Industrial Electronics, Inc. are registered and/or pending registered trademarks under the U.S. Patent and TrademarkOffice, assumed names, registered domain names, and/or trade names of Galco Industrial Electronics, Inc., a Michigan corporation.
VIDEO TRANSCRIPT:
Welcome to G-TV
Today I will be showing you the AV1 Flashing Combination Audible/Visual Signal by Federal Signal.
Federal Signal Model AV1 combination audible/visual signal features a 100% polycarbonate housing that is rated for Type 3R rain-tight applications. The AV1 design provides three mounting configurations, and is available in amber, blue, clear, green and red.
The black base will accommodate mounting to a half inch NPT pipe, a 4-inch octagonal electrical box or any flat surface. The surface mount gasket serves as a template for preparing a flat surface with appropriate mounting holes.
All AV1 units feature a unique twist and lock dome to allow tool-free access to the incandescent lamp. The Fresnel lensing provides superior visibility in all directions, and the integrated buzzer provides 85dB output at 10 feet. The sounder is synchronized to buzz at the same rate as the visual signal, which is 75 times per minute. Federal Signals AV1 comes in two voltage variations: 24 volts DC and 120 volts AC. Each unit is factory assembled with two color-coded leads. If desired, the user can remove the leads and connect directly to the terminal block located in the base of the unit.
The AV1 is UL and cUL Listed and CSA Certified.
Federal Signals AV1 Flashing Combination Audible/Visual Signal along with thousands of other parts and services are available at Galco.com

I wanted to take a look at something that assists visually impaired students and faculty on our campus (Michigan State University), so I went to FarmLane, a busy thoroughfare. There I found audible traffic signals that guide visually impaired people across the street. The audible traffic signals tell the pedestrian which street to cross, how much time they have to do so, and when not to cross.

I wanted to take a look at something that assists visually impaired students and faculty on our campus (Michigan State University), so I went to FarmLane, a busy thoroughfare. There I found audible traffic signals that guide visually impaired people across the street. The audible traffic signals tell the pedestrian which street to cross, how much time they have to do so, and when not to cross.

Build an audible VHF/UHF handheld transmitter tester in 10 minutes

In 10 minutes time using just three parts you could have your own audible transmitter tester. Operates with VHF/UHF transceivers up to about 500 MHz it gives an...

In 10 minutes time using just three parts you could have your own audible transmitter tester. Operates with VHF/UHF transceivers up to about 500 MHz it gives an audio indication if the transceiver is transmitting. Useful for testing equipment, radio direction finding, testing directive antennas and more.

In 10 minutes time using just three parts you could have your own audible transmitter tester. Operates with VHF/UHF transceivers up to about 500 MHz it gives an audio indication if the transceiver is transmitting. Useful for testing equipment, radio direction finding, testing directive antennas and more.

http://www.larsonelectronics.com/p-105987-hazardous-location-signal-light-w-audible-alarm-class-1-div-2-4-colors-avail-steady-or-strobe.aspx?utm_source=Youtube&utm_medium=HAL-TL-1X10W-C-PA&utm_term=Lighting&utm_campaign=Youtube-Videos
Made in the USA
The HAL-TL-1X10W-C-PA Class 1 Division 2LEDSignalStackLight with Audible Horn from Larson Electronics is approved for use in hazardous environments where explosive and flammable gases, vapors, and dusts stand a potential to exist, as well as wet locations and marine environments. This vapor proof signal stack light light is designed for routing traffic in industrial refueling stations and processing status indications in manufacturing facilities.
The HAL-TL-1X10W-C-PA hazardous location signal stack LED light with audible horn an signal/traffic light that offers one 10 watt LED lamp in red, amber, blue, green or white light output, other custom configurations available upon request. This unit is rated for Class 1 Division 2 and Class 2 Division 2 work environments, T2D temperature rated, weatherproof/dust-proof, and NEMA 4X and marine rated for wet environments. These indicator lights have 50,000 hours of operational life and the unit works on 120/240 volts AC or 24 volts DC configurations for standard or low voltage operation.
This hazardous area fixture is configured ready burn, strobe, or ready burn and strobe combination and each LED lamp offers exceptional 1050 lumen output each. The explosion proof audible alarm setup sounds a unique tone per the user setting. Multiple units can be configured for different lamp colors and different tones, providing operators in hazardous locations with an effective and powerful alert/signal system that can withstand demanding conditions and be heard over the operation of industrial machinery and equipment. A NEMA 4X rated explosion proof junction box protects the internal wiring and can be tapped in order to connect this stack light to power sources. This explosion proof signal light is durable, can operate in any weather condition, and is rated for Class 1 Division 2, Groups C and D and Class 2 Division 2, Group F areas where flammable gas and dust have potential to exist.
The 10 watt lamp in this hazardous location stack light provides high output in visible signal colored LED lamp, with a lifespan of 50,000 hours, is protected by durable heat treated glass globes and globe guards for added durability, and offer cool operation and clean, bright output surpassing that of 100Watt incandescent indicator lamps. The LED lamp is colored LEDs instead of colored globes, providing more light output. We offer strobe or steady burn lamps for this fixture. The light housing is constructed of a non-metallic polymer that is chemical resistant and flame retardant while the horn is made of fiberglass.
This stack light is equipped an explosion proof horn. Attached to the far end of the fixture, this audible horn provides operators with up to 5 different tones that can reach a peak output of 110dBA, powerful enough to be heard over industrial operations. There is no dimming or volume control for the lights or horns.
Wiring is through a 3/4" NPT conduit access hub. The unit can be ordered in 120V or 240V AC configuration for use with standard line voltages or 24V DC for low voltage use. Mounting is provided by a heavy gauge aluminum base with predrilled holes designed to be bolted to walls and flat surfaces for permanent and secure attachment. Power is provided by individual conductors to allow independent operation of each lamp and tone combination. Operators can tap the C1D1 junction box in order to connect to a power source.
This 20 Watt dual lamp hazardous location signal stack LED light with alarm system is an ideal fixture indicator for manufacturing facilities, routing shipping lanes, and any hazardous work area where status indicators and audible alarms are necessary.
#larsonlights

http://www.larsonelectronics.com/p-105987-hazardous-location-signal-light-w-audible-alarm-class-1-div-2-4-colors-avail-steady-or-strobe.aspx?utm_source=Youtube&utm_medium=HAL-TL-1X10W-C-PA&utm_term=Lighting&utm_campaign=Youtube-Videos
Made in the USA
The HAL-TL-1X10W-C-PA Class 1 Division 2LEDSignalStackLight with Audible Horn from Larson Electronics is approved for use in hazardous environments where explosive and flammable gases, vapors, and dusts stand a potential to exist, as well as wet locations and marine environments. This vapor proof signal stack light light is designed for routing traffic in industrial refueling stations and processing status indications in manufacturing facilities.
The HAL-TL-1X10W-C-PA hazardous location signal stack LED light with audible horn an signal/traffic light that offers one 10 watt LED lamp in red, amber, blue, green or white light output, other custom configurations available upon request. This unit is rated for Class 1 Division 2 and Class 2 Division 2 work environments, T2D temperature rated, weatherproof/dust-proof, and NEMA 4X and marine rated for wet environments. These indicator lights have 50,000 hours of operational life and the unit works on 120/240 volts AC or 24 volts DC configurations for standard or low voltage operation.
This hazardous area fixture is configured ready burn, strobe, or ready burn and strobe combination and each LED lamp offers exceptional 1050 lumen output each. The explosion proof audible alarm setup sounds a unique tone per the user setting. Multiple units can be configured for different lamp colors and different tones, providing operators in hazardous locations with an effective and powerful alert/signal system that can withstand demanding conditions and be heard over the operation of industrial machinery and equipment. A NEMA 4X rated explosion proof junction box protects the internal wiring and can be tapped in order to connect this stack light to power sources. This explosion proof signal light is durable, can operate in any weather condition, and is rated for Class 1 Division 2, Groups C and D and Class 2 Division 2, Group F areas where flammable gas and dust have potential to exist.
The 10 watt lamp in this hazardous location stack light provides high output in visible signal colored LED lamp, with a lifespan of 50,000 hours, is protected by durable heat treated glass globes and globe guards for added durability, and offer cool operation and clean, bright output surpassing that of 100Watt incandescent indicator lamps. The LED lamp is colored LEDs instead of colored globes, providing more light output. We offer strobe or steady burn lamps for this fixture. The light housing is constructed of a non-metallic polymer that is chemical resistant and flame retardant while the horn is made of fiberglass.
This stack light is equipped an explosion proof horn. Attached to the far end of the fixture, this audible horn provides operators with up to 5 different tones that can reach a peak output of 110dBA, powerful enough to be heard over industrial operations. There is no dimming or volume control for the lights or horns.
Wiring is through a 3/4" NPT conduit access hub. The unit can be ordered in 120V or 240V AC configuration for use with standard line voltages or 24V DC for low voltage use. Mounting is provided by a heavy gauge aluminum base with predrilled holes designed to be bolted to walls and flat surfaces for permanent and secure attachment. Power is provided by individual conductors to allow independent operation of each lamp and tone combination. Operators can tap the C1D1 junction box in order to connect to a power source.
This 20 Watt dual lamp hazardous location signal stack LED light with alarm system is an ideal fixture indicator for manufacturing facilities, routing shipping lanes, and any hazardous work area where status indicators and audible alarms are necessary.
#larsonlights

Matlab demonstration - basic signal manipulation using audio signals

The Beep Test audio Full

Audio Signal-Tracer SVF7000: Analysis of the input circuitry

Analyzing a quite advanced (for 1990) audio signal-tracer with a lot of comfort-features intended for audio repair-work and quickchecking of audio equipment.
Yet although the circuit-design is quite well-done and semi-professional there is a little issue with the frequency-response at the edges of the audible spectrum.
And there is a grave design-error in the choice of the switchable output-impedances of the frequency-generator part.
Features of the ELV SVF7000:
Autoranging relays-switched input-range from 2.5mV to 256V (!) full-scale in a shielded metal-can, both True-RMS level and dB-display, selectable relative or absolute dBm display, quasi-power-measurement with selectable load-resistances, peak- and average display of wattage, selectable manual and autoranging of the input-stage, i...

published: 17 Nov 2017

Voyager 2 PWS Jupiter Encounter audio 1979-07-02 15:56-16:45 SCET

The PWS plasma wave instrument on Voyager 2 recorded these signals as the spacecraft was approaching Jupiter on July 2, 1979, between 1556 and 1645 spacecraft event time (essentially UTC). These are the authentic sounds of Jupiter in contrast to the multitude of artistic interpretations and "therapeutic" mixes found on YouTube that may be based on PWS data, but have been highly manipulated and sound very little like the original signals. The audio presented here is not shifted in frequency and not filtered or mixed with music.
The PWS wideband waveform instruments on the two Voyager spacecraft sample the electric field on the dipole wire antenna at a rate of 28800 4-bit samples per second, using an automatic gain control. Consequently, the audio is just slightly better than telephone q...

published: 25 Feb 2013

D/A and A/D | Digital Show and Tell (Monty Montgomery @ xiph.org)

Original Video: http://xiph.org/video/vid2.shtml
Why you don't need 24 Bit 192 kHz listening formats - https://people.xiph.org/~xiphmont/demo/neil-young.html
More videos in this series: http://xiph.org/video/
Get the software - https://wiki.xiph.org/Videos/Digital_Show_and_Tell
Monty at Xiph presents a well thought out and explained, real-time demonstrations of sampling, quantization, bit-depth, and dither on real audio equipment using both modern digital analysis and vintage analog bench equipment.
This video has been reproduced with permission of Monty @ xipg.org and in accordance with Attribution-ShareAlike 3.0 http://creativecommons.org/licenses/by-sa/3.0/
Further reading: Audio Myths & DAWWars - http://www.image-line.com/support/FLHelp/html/app_audio.htm
This is a video abo...

Room EQ Wizard For Beginners: A Simple Overview of How To Measure Subwoofers In A Home Theater 😀🎵

Room EQ Wizard is a great program that is free to use, and very good for discovering bass problems or measuring your "in room" subwoofer performance. Vv Click "SHOW MORE" vV
Any decent measurement microphone can be used, but the one I use in the video is the MiniDSP Umik-1. It's not insanely expensive, and it comes with a calibration file.
Umik-1 microphone: http://amzn.to/2lS4ufM (anything you buy from Amazon within 24 hours of following this link would help this channel)
Special thanks to John Mulcahy, who produced this software and provides it to the audio world for free! He has a donation link, and knowing what it's like to produce free content, it would be really cool to send him a little something if you you find the program useful. I certainly do. Even a $1 helps, and it goes ...

published: 15 Mar 2017

20000Hz Ultrasonic Mouse and Rat Repellent (11 1/2 Hours)

20000Hz UltrasonicMouse and Rat Repellent (11 1/2Hours)
Turn the volume all the way up and let this scare the mice or rats out of your house. You will need good loud speakers for this to work, using your portable devices may work, but not as effective because of the small, weak speakers.
To get the best quality sound you will want to run this at the highest quality (1080p) and have a fast internet connection. The quality of the noise is dependent on the quality of you stream.

Vietnam War Audio: Mad Dog One Six

Interval Timer 30 Seconds

Beeps every 30 seconds, for half an hour. For an interval counter, enable subtitle.

published: 12 Jan 2013

Ultrasonic Rodent Mouse Repelant

playlist 30 day Ultrasonic Rodent Mouse Repelant :https://www.youtube.com/watch?v=J8zo1wXfvFc&list=PLe5_kK6g9ABBIO5gFvCkg-VpKR4Sx58d3&index=1
https://www.youtube.com/playlist?list=PLe5_kK6g9ABBIO5gFvCkg-VpKR4Sx58d3
Electronic mouse repellents operate under the idea of using high-frequency sounds to drive mice away from food sources and nesting grounds within human homes.
Sonic or ultrasonic devices have been touted as repellents for everything from roaches to insects to rodents, specifically rats and mice. There are multiple brands of these electric devices that are said to emit either a sonic or ultrasonic wave, which these pests allegedly find irritating. Some are sold specifically to repel rodents. However, there is little data that these devices repel insects or are effective in rode...

The Cricket on the Hearth by Charles Dickens (Christmas Audio Book Read with British English Accent)

Summary:
The tale of John Peerybingle, the good-hearted carrier, and his young wife Mary ('Dot'), interwoven with the story of poor toymaker Caleb Plummer, his beloved blind daughter Bertha, and the harsh old toy merchant Tackleton, who is due to marry May Fielding, a childhood friend of Dot. Comic relief is provided by Tilly Slowboy, the disaster-prone nursemaid of John and Dot's baby, and Boxer, the family dog.
The cricket who chirps on the family hearth assumes fairy form to save the day when disaster looms in the form of a mysterious stranger. Sentimental? Certainly - but this, the third (1845) of Dickens' short Christmas books, is as charming and irresistible as its predecessors A Christmas Carol (1843) and The Chimes (1844).
The novella is subdivided into chapters called 'Chirps',...

How to do Therapeutic plasma exchange using Fresenius Kabi COM.TEC machine

#TPE #plasmaexchange
The Operating Instructions of #Fresenius Kabi #COM.TEC
This video describes the therapeutic procedures.
– Installation of the #apheresis set
– Priming (preceded by the alarm test)
– Separation
– Reinfusion
The blood cell separator permits the collection of blood components
from donors, therapeutic apheresis or #therapeutic plasma exchange
The device is operated via a high-resolution color monitor with softkeys on either side. The monitor will only show those keys and user help messages required in the respective phase of the program. The current data of the separation will always be displayed.
A set, which basically consists of the separation chamber, the pump
lines, the drip chambers and the bags, is required for the separation
procedure. Different sets are require...

Lecture - 37 Audio and Video Compression

ANTHEM by Ayn Rand - FULL Audio Book - w/ Transcript/Captions

Anthem by Ayn Rand (1905-1982) - FULL Audio Book - w/ Transcript/Captions - GreatestAudioBooks.com
Anthem is a dystopian science fiction story taking place at some unspecified future date. Mankind has entered another dark age as a result of what Rand saw as the weaknesses of socialistic thinking and economics. Technological advancement is now carefully planned (when it is allowed to occur, if at all) and the concept of individuality has been eliminated (for example, the word "I" has disappeared from the language). As is common in her work, Rand draws a clear distinction between the "socialist/communal" values of equality and brotherhood and the "productive/capitalist" values of achievement and individuality. The story also parallels Stalinist Russia, which was currently going on at the...

Learn compression: http://learncompression.com
Learn to mix hip-hop: http://mixinghiphop.com
Improve your ear: http://quiztones.com
More mixing tips: http://theproaudiofiles.com
An in-depth tutorial on phase. Is it timing difference or polarity? What about comb filtering? What is a linear phase EQ? Learn more here: http://theproaudiofiles.com/phase/
---
Tutorial Breakdown:
SignalPhase
- What's the deal?
- Why does it matter?
- What tools are available?
- In-phase vs. Out-of-phase?
- "Kind of" In-phase?
- "Sort of" Out-of-phase?
Phase is complicated
— Not just In-phase or Out-of-phase
Signal processors can effect phase
— Phase distortionGood news: humans cannot perceive signal phase differences in some cases
Bad news: other cases...
Signal phase is complicated
— Phase is frequency dependent
Are signal processors going to screw up my mix?
— Linear phase processors
Linear phase
— What's with the name?
Non-linear phase
— Are there any drawbacks or trade-offs?
Is a signal phase shift the equivalent of a time shift, just without the shift in time?
— That doesn't seem so bad
It is more complicated than that
— Phase is frequency dependent
Linear phase
— What's with the name?
— Non-linear phase
Are there any drawbacks or trade-offs?
Linear Phase
— Processing results in a constant time shift for all frequencies
— Relationship between frequencies is not distorted
Trade-off
— Time delay (Latency)
When are linear phase processors useful?
— When you don't want the phase relationship between different frequencies to be distorted
— When a little latency doesn't hurt anything
— Master Bus
— Compensate for latency

Learn compression: http://learncompression.com
Learn to mix hip-hop: http://mixinghiphop.com
Improve your ear: http://quiztones.com
More mixing tips: http://theproaudiofiles.com
An in-depth tutorial on phase. Is it timing difference or polarity? What about comb filtering? What is a linear phase EQ? Learn more here: http://theproaudiofiles.com/phase/
---
Tutorial Breakdown:
SignalPhase
- What's the deal?
- Why does it matter?
- What tools are available?
- In-phase vs. Out-of-phase?
- "Kind of" In-phase?
- "Sort of" Out-of-phase?
Phase is complicated
— Not just In-phase or Out-of-phase
Signal processors can effect phase
— Phase distortionGood news: humans cannot perceive signal phase differences in some cases
Bad news: other cases...
Signal phase is complicated
— Phase is frequency dependent
Are signal processors going to screw up my mix?
— Linear phase processors
Linear phase
— What's with the name?
Non-linear phase
— Are there any drawbacks or trade-offs?
Is a signal phase shift the equivalent of a time shift, just without the shift in time?
— That doesn't seem so bad
It is more complicated than that
— Phase is frequency dependent
Linear phase
— What's with the name?
— Non-linear phase
Are there any drawbacks or trade-offs?
Linear Phase
— Processing results in a constant time shift for all frequencies
— Relationship between frequencies is not distorted
Trade-off
— Time delay (Latency)
When are linear phase processors useful?
— When you don't want the phase relationship between different frequencies to be distorted
— When a little latency doesn't hurt anything
— Master Bus
— Compensate for latency

Audio Signal-Tracer SVF7000: Analysis of the input circuitry

Analyzing a quite advanced (for 1990) audio signal-tracer with a lot of comfort-features intended for audio repair-work and quickchecking of audio equipment.
Ye...

Analyzing a quite advanced (for 1990) audio signal-tracer with a lot of comfort-features intended for audio repair-work and quickchecking of audio equipment.
Yet although the circuit-design is quite well-done and semi-professional there is a little issue with the frequency-response at the edges of the audible spectrum.
And there is a grave design-error in the choice of the switchable output-impedances of the frequency-generator part.
Features of the ELV SVF7000:
Autoranging relays-switched input-range from 2.5mV to 256V (!) full-scale in a shielded metal-can, both True-RMS level and dB-display, selectable relative or absolute dBm display, quasi-power-measurement with selectable load-resistances, peak- and average display of wattage, selectable manual and autoranging of the input-stage, integrated or external loudspeaker with 1.5W amplifier, switchable RIAA record-equalisation, 4 relays-switched inputs (BNC, 2xRCA, DIN), signal-generator with 4 quartz-stabilized sine-signals (1% distortion; 20Hz, 1kHz, 10kHz, 20kHz), 5 selectable output-levels/impedances (50 Ohms, RCA-Aux, microphone, magnetic record-player pickup, crystal/piezo pickup), 4 output-connectors (BNC, 2xRCA, DIN)...Link to original 3-part article-series from ELV-magazine:
https://www.elv.de/Komfort-Signalverfolger-SVF-7000-Teil-13/x.aspx/cid_726/detail_35001
SupportRoger on Patreon!
https://www.patreon.com/kainkalabs

Analyzing a quite advanced (for 1990) audio signal-tracer with a lot of comfort-features intended for audio repair-work and quickchecking of audio equipment.
Yet although the circuit-design is quite well-done and semi-professional there is a little issue with the frequency-response at the edges of the audible spectrum.
And there is a grave design-error in the choice of the switchable output-impedances of the frequency-generator part.
Features of the ELV SVF7000:
Autoranging relays-switched input-range from 2.5mV to 256V (!) full-scale in a shielded metal-can, both True-RMS level and dB-display, selectable relative or absolute dBm display, quasi-power-measurement with selectable load-resistances, peak- and average display of wattage, selectable manual and autoranging of the input-stage, integrated or external loudspeaker with 1.5W amplifier, switchable RIAA record-equalisation, 4 relays-switched inputs (BNC, 2xRCA, DIN), signal-generator with 4 quartz-stabilized sine-signals (1% distortion; 20Hz, 1kHz, 10kHz, 20kHz), 5 selectable output-levels/impedances (50 Ohms, RCA-Aux, microphone, magnetic record-player pickup, crystal/piezo pickup), 4 output-connectors (BNC, 2xRCA, DIN)...Link to original 3-part article-series from ELV-magazine:
https://www.elv.de/Komfort-Signalverfolger-SVF-7000-Teil-13/x.aspx/cid_726/detail_35001
SupportRoger on Patreon!
https://www.patreon.com/kainkalabs

Voyager 2 PWS Jupiter Encounter audio 1979-07-02 15:56-16:45 SCET

The PWS plasma wave instrument on Voyager 2 recorded these signals as the spacecraft was approaching Jupiter on July 2, 1979, between 1556 and 1645 spacecraft e...

The PWS plasma wave instrument on Voyager 2 recorded these signals as the spacecraft was approaching Jupiter on July 2, 1979, between 1556 and 1645 spacecraft event time (essentially UTC). These are the authentic sounds of Jupiter in contrast to the multitude of artistic interpretations and "therapeutic" mixes found on YouTube that may be based on PWS data, but have been highly manipulated and sound very little like the original signals. The audio presented here is not shifted in frequency and not filtered or mixed with music.
The PWS wideband waveform instruments on the two Voyager spacecraft sample the electric field on the dipole wire antenna at a rate of 28800 4-bit samples per second, using an automatic gain control. Consequently, the audio is just slightly better than telephone quality. Packets of 1600 samples are acquired, separated by the equivalent of 128 missing samples. Running these packets together results in the playback taking less than real-time (by a factor of 1600 / 1728), and also introduces a slight audible flutter. The amplitudes at the edges of these packets have been smoothed to reduce this flutter, but this is the only modification to the signal.
These are by no means the only "sounds" that Jupiter makes, but there is nice variety during this hour interval. All of the available measurements during this interval are present but since there are time gaps, the total run time is approximately 27 minutes (plenty long to become tedious to listen all the way through). Let me assure you, however, that there are less-interesting intervals.
Although I'm not qualified to interpret the science, I should at least point out some of the interference present. The constant tone at 2.4kHz is caused by the spacecraft power supply. The occasional sounds like someone pounding a drum or thumping on an oil barrel are due to either a stepper motor on another instrument or to spacecraft attitude thruster firings. The tones with harmonics that build slowly and end abruptly and appear as multiple horizontal lines in the spectrogram are due to interference from other science instruments onboard. UnlessI've missed something, everything else is the genuine "sound" of Jupiter.
Now, what do I mean by "sound" of Jupiter? First, the sounds are not typically produced at the planet itself, but in the magnetosphere surrounding the planet. In this particular case, most of the signals are generated from the interaction of the supersonic solar wind colliding with the bow shock ahead of Jupiter's magnetosphere. These waves are not the same as the pressure waves in the atmosphere that we normally think of as sound. However, they do have some similarities. Even though space is an excellent vacuum, it is "filled" with particles with a density of typically a few to several hundred per cubic centimeter near planets. Most of these are charged and constitute what we call plasma. Being charged, these particles interact with each other without the need to "collide" as they do in the atmosphere. Moving charged particles both produce electromagnetic fields and waves and also are moved by electromagnetic fields and waves generated elsewhere. These are "plasma waves". Many of these interactions occur at frequencies that are audible to humans. This doesn't mean that a human ear could hear them in space -- the pressures are far too small -- but it is conceivable that an ultra-sensitive microphone could measure them. In practice, however, it is far easier to measure the oscillations in the accompanying electric and magnetic fields with antennas, and that is just what we do. To produce sound we can hear, we simply do the moral equivalent of hooking our antennas up to an amplifier in order to drive speakers. Plasma waves can be considered "space audio".
The video shows a series of 48-second-wide spectrograms with an animated cursor that shows the time of the audio track. The amplitude of the signals is color coded with dark blue for the weakest and red for the strongest signals. Low frequencies are at the bottom of the plot and high frequencies are at the top. Time ranges from left to right.
For more information on the Voyager project, see
http://voyager.jpl.nasa.gov/
For more information on the Voyager plasma wave investigations, see
http://www-pw.physics.uiowa.edu/voyager/
For access to the specific data used to produce this video, see
http://www-pw.physics.uiowa.edu/voyager/data/VGPW_2001/EXTRAS/HTML/JUPITER_ENCOUNTER/V2P2_056/V2P2_056.HTM
http://www-pw.physics.uiowa.edu/voyager/data/VGPW_2001/EXTRAS/HTML/JUPITER_ENCOUNTER/V2P2_057/V2P2_057.HTM
For more information on space audio, see
http://space-audio.org/
For more videos related to space audio, see my YouTube channel
http://youtube.com/VoyagerPWS
Please note the disclaimers under "About SpaceAudio" on my YouTube channel. This is not a presentation of scientific findings and I am not representing any organization.

The PWS plasma wave instrument on Voyager 2 recorded these signals as the spacecraft was approaching Jupiter on July 2, 1979, between 1556 and 1645 spacecraft event time (essentially UTC). These are the authentic sounds of Jupiter in contrast to the multitude of artistic interpretations and "therapeutic" mixes found on YouTube that may be based on PWS data, but have been highly manipulated and sound very little like the original signals. The audio presented here is not shifted in frequency and not filtered or mixed with music.
The PWS wideband waveform instruments on the two Voyager spacecraft sample the electric field on the dipole wire antenna at a rate of 28800 4-bit samples per second, using an automatic gain control. Consequently, the audio is just slightly better than telephone quality. Packets of 1600 samples are acquired, separated by the equivalent of 128 missing samples. Running these packets together results in the playback taking less than real-time (by a factor of 1600 / 1728), and also introduces a slight audible flutter. The amplitudes at the edges of these packets have been smoothed to reduce this flutter, but this is the only modification to the signal.
These are by no means the only "sounds" that Jupiter makes, but there is nice variety during this hour interval. All of the available measurements during this interval are present but since there are time gaps, the total run time is approximately 27 minutes (plenty long to become tedious to listen all the way through). Let me assure you, however, that there are less-interesting intervals.
Although I'm not qualified to interpret the science, I should at least point out some of the interference present. The constant tone at 2.4kHz is caused by the spacecraft power supply. The occasional sounds like someone pounding a drum or thumping on an oil barrel are due to either a stepper motor on another instrument or to spacecraft attitude thruster firings. The tones with harmonics that build slowly and end abruptly and appear as multiple horizontal lines in the spectrogram are due to interference from other science instruments onboard. UnlessI've missed something, everything else is the genuine "sound" of Jupiter.
Now, what do I mean by "sound" of Jupiter? First, the sounds are not typically produced at the planet itself, but in the magnetosphere surrounding the planet. In this particular case, most of the signals are generated from the interaction of the supersonic solar wind colliding with the bow shock ahead of Jupiter's magnetosphere. These waves are not the same as the pressure waves in the atmosphere that we normally think of as sound. However, they do have some similarities. Even though space is an excellent vacuum, it is "filled" with particles with a density of typically a few to several hundred per cubic centimeter near planets. Most of these are charged and constitute what we call plasma. Being charged, these particles interact with each other without the need to "collide" as they do in the atmosphere. Moving charged particles both produce electromagnetic fields and waves and also are moved by electromagnetic fields and waves generated elsewhere. These are "plasma waves". Many of these interactions occur at frequencies that are audible to humans. This doesn't mean that a human ear could hear them in space -- the pressures are far too small -- but it is conceivable that an ultra-sensitive microphone could measure them. In practice, however, it is far easier to measure the oscillations in the accompanying electric and magnetic fields with antennas, and that is just what we do. To produce sound we can hear, we simply do the moral equivalent of hooking our antennas up to an amplifier in order to drive speakers. Plasma waves can be considered "space audio".
The video shows a series of 48-second-wide spectrograms with an animated cursor that shows the time of the audio track. The amplitude of the signals is color coded with dark blue for the weakest and red for the strongest signals. Low frequencies are at the bottom of the plot and high frequencies are at the top. Time ranges from left to right.
For more information on the Voyager project, see
http://voyager.jpl.nasa.gov/
For more information on the Voyager plasma wave investigations, see
http://www-pw.physics.uiowa.edu/voyager/
For access to the specific data used to produce this video, see
http://www-pw.physics.uiowa.edu/voyager/data/VGPW_2001/EXTRAS/HTML/JUPITER_ENCOUNTER/V2P2_056/V2P2_056.HTM
http://www-pw.physics.uiowa.edu/voyager/data/VGPW_2001/EXTRAS/HTML/JUPITER_ENCOUNTER/V2P2_057/V2P2_057.HTM
For more information on space audio, see
http://space-audio.org/
For more videos related to space audio, see my YouTube channel
http://youtube.com/VoyagerPWS
Please note the disclaimers under "About SpaceAudio" on my YouTube channel. This is not a presentation of scientific findings and I am not representing any organization.

Original Video: http://xiph.org/video/vid2.shtml
Why you don't need 24 Bit 192 kHz listening formats - https://people.xiph.org/~xiphmont/demo/neil-young.html
More videos in this series: http://xiph.org/video/
Get the software - https://wiki.xiph.org/Videos/Digital_Show_and_Tell
Monty at Xiph presents a well thought out and explained, real-time demonstrations of sampling, quantization, bit-depth, and dither on real audio equipment using both modern digital analysis and vintage analog bench equipment.
This video has been reproduced with permission of Monty @ xipg.org and in accordance with Attribution-ShareAlike 3.0 http://creativecommons.org/licenses/by-sa/3.0/
Further reading: Audio Myths & DAWWars - http://www.image-line.com/support/FLHelp/html/app_audio.htm
This is a video about the digital vs analog audio quality debate. It explains, with examples, why analog audio within the accepted limits of human hearing (20 Hz to 20 kHz) can be reproduced with perfect fidelity using a 44.1 kHz 16 Bit digital signal.

Original Video: http://xiph.org/video/vid2.shtml
Why you don't need 24 Bit 192 kHz listening formats - https://people.xiph.org/~xiphmont/demo/neil-young.html
More videos in this series: http://xiph.org/video/
Get the software - https://wiki.xiph.org/Videos/Digital_Show_and_Tell
Monty at Xiph presents a well thought out and explained, real-time demonstrations of sampling, quantization, bit-depth, and dither on real audio equipment using both modern digital analysis and vintage analog bench equipment.
This video has been reproduced with permission of Monty @ xipg.org and in accordance with Attribution-ShareAlike 3.0 http://creativecommons.org/licenses/by-sa/3.0/
Further reading: Audio Myths & DAWWars - http://www.image-line.com/support/FLHelp/html/app_audio.htm
This is a video about the digital vs analog audio quality debate. It explains, with examples, why analog audio within the accepted limits of human hearing (20 Hz to 20 kHz) can be reproduced with perfect fidelity using a 44.1 kHz 16 Bit digital signal.

Room EQ Wizard For Beginners: A Simple Overview of How To Measure Subwoofers In A Home Theater 😀🎵

Room EQ Wizard is a great program that is free to use, and very good for discovering bass problems or measuring your "in room" subwoofer performance. Vv Click "...

Room EQ Wizard is a great program that is free to use, and very good for discovering bass problems or measuring your "in room" subwoofer performance. Vv Click "SHOW MORE" vV
Any decent measurement microphone can be used, but the one I use in the video is the MiniDSP Umik-1. It's not insanely expensive, and it comes with a calibration file.
Umik-1 microphone: http://amzn.to/2lS4ufM (anything you buy from Amazon within 24 hours of following this link would help this channel)
Special thanks to John Mulcahy, who produced this software and provides it to the audio world for free! He has a donation link, and knowing what it's like to produce free content, it would be really cool to send him a little something if you you find the program useful. I certainly do. Even a $1 helps, and it goes towards improving the software.
http://www.roomeqwizard.com/
On that site you will find the software itself, links to discussions and help articles, and a general wealth of information beyond what I can provide.
As you can tell from the video, I'm no expert, and there are features in the program that I will touch on in future videos, but don't stop learning with me. I just wanted my viewers to get an idea of how to begin using the program. Once you get going, it gets a little easier.
The better you get at taking notes, the more useful past measurements are. As you could see in the video, there were a few times good notes would have made me look a little better (Flat vs Reference, lol). There might have been a difference with those settings on the X-2000, but it's not really important one way or another.
Also keep in mind that the line isn't everything. These graphs can hint at the difference between a single and dual subs, but it doesn't tell the whole "dynamic" story. It doesn't just fill in and even out bass, it adds a "movie theater" feel.
I should be listening to the PB-16 Ultra by itself, but I just can't hang, I need 2, it's too hard to go back to a single. I know what I'm hearing is "PB-2000 flavored" PB-16 Ultra, but you really need 2 identical subs to properly hear what any sub can do. For sure, there is increased realism, but a full review will happen after I get the second one in. I can't wait!
***Gear and Links***
Subwoofers should reproduce quality sound with authority throughout the humanly audible bass spectrum (20-100 hertz). Most ported subwoofers do not.
Browse this channel and http://www.subwoofer101.com/ for layman's tech advice, product reviews, content reviews, and tips. It's OK to be new here, that's the whole point!
http://www.subwoofer101.com/best-subwoofers/
I use affiliate links to support this channel and the website, but my opinions are 100% my own. You can support this channel by visiting my Amazon store for little stuff like movies and even big stuff like amps and TV's: http://astore.amazon.com/subwoofer101-20
Subscribing, likes, comments, and shares all help a lot too!
Subwoofer 101 is the world's first SVS affiliate, so if you mention Subwoofer 101, it can help support this channel. Please let them know what you think of the channel, good or bad!
SVS Bill of Rights, one of the reasons I'm so comfortable as an affiliate: http://bit.ly/SVSBillofRights To ensure full Bill of Rights coverage, including trade in and return policies, order directly from SVS. If you buy them anywhere else, you are subject to that store's return policies, which might be less impressive.
Here is the setup at the time of upload:
Amplifier Denon X6200W: http://amzn.to/2fbCbGx
Tried the Marantz, loved it except for the portal display, preferred the overall sound: http://amzn.to/2eKf9SI
Provided on a demo basis by SVS:
Towers: http://sub101.link/PrimeTower
Surrounds: http://sub101.link/SatelliteAtmos/DTS:X/Auro 3D height effect speakers: http://sub101.link/ElevationCenter: http://sub101.link/PrimeCenter
Dual Ported Subwoofers: http://sub101.link/PB-2000
PB-16 Ultra: http://sub101.link/PB-16Ultra
SVS Soundpath Subwoofer IsolationSystem: http://sub101.link/Isolation
Speaker wire:
http://sub101.link/SP1SpeakerCable
http://sub101.link/UltraSpeakerCable
Subwoofer cable: http://sub101.link/RCA
LG 4K 3D that I replaced previous Vizio with a SquareTrade type warranty. Love the LG, some issues aside.
http://bit.ly/LG4K3D65 (newer version)
Measurement Mic for use with Room EQ Wizard:
http://bit.ly/UMIK-1
Room EQ Wizard (free, donations encouraged for the guy that created it-not me, use earplugs!):
http://www.roomeqwizard.com/
Follow on Facebook and Twitter
https://twitter.com/subwoofer101com
https://www.facebook.com/subwoofer101
https://open.spotify.com/user/subwoofer101
Subscribe for more videos like this, and feel free to share, comment, and ask questions.

Room EQ Wizard is a great program that is free to use, and very good for discovering bass problems or measuring your "in room" subwoofer performance. Vv Click "SHOW MORE" vV
Any decent measurement microphone can be used, but the one I use in the video is the MiniDSP Umik-1. It's not insanely expensive, and it comes with a calibration file.
Umik-1 microphone: http://amzn.to/2lS4ufM (anything you buy from Amazon within 24 hours of following this link would help this channel)
Special thanks to John Mulcahy, who produced this software and provides it to the audio world for free! He has a donation link, and knowing what it's like to produce free content, it would be really cool to send him a little something if you you find the program useful. I certainly do. Even a $1 helps, and it goes towards improving the software.
http://www.roomeqwizard.com/
On that site you will find the software itself, links to discussions and help articles, and a general wealth of information beyond what I can provide.
As you can tell from the video, I'm no expert, and there are features in the program that I will touch on in future videos, but don't stop learning with me. I just wanted my viewers to get an idea of how to begin using the program. Once you get going, it gets a little easier.
The better you get at taking notes, the more useful past measurements are. As you could see in the video, there were a few times good notes would have made me look a little better (Flat vs Reference, lol). There might have been a difference with those settings on the X-2000, but it's not really important one way or another.
Also keep in mind that the line isn't everything. These graphs can hint at the difference between a single and dual subs, but it doesn't tell the whole "dynamic" story. It doesn't just fill in and even out bass, it adds a "movie theater" feel.
I should be listening to the PB-16 Ultra by itself, but I just can't hang, I need 2, it's too hard to go back to a single. I know what I'm hearing is "PB-2000 flavored" PB-16 Ultra, but you really need 2 identical subs to properly hear what any sub can do. For sure, there is increased realism, but a full review will happen after I get the second one in. I can't wait!
***Gear and Links***
Subwoofers should reproduce quality sound with authority throughout the humanly audible bass spectrum (20-100 hertz). Most ported subwoofers do not.
Browse this channel and http://www.subwoofer101.com/ for layman's tech advice, product reviews, content reviews, and tips. It's OK to be new here, that's the whole point!
http://www.subwoofer101.com/best-subwoofers/
I use affiliate links to support this channel and the website, but my opinions are 100% my own. You can support this channel by visiting my Amazon store for little stuff like movies and even big stuff like amps and TV's: http://astore.amazon.com/subwoofer101-20
Subscribing, likes, comments, and shares all help a lot too!
Subwoofer 101 is the world's first SVS affiliate, so if you mention Subwoofer 101, it can help support this channel. Please let them know what you think of the channel, good or bad!
SVS Bill of Rights, one of the reasons I'm so comfortable as an affiliate: http://bit.ly/SVSBillofRights To ensure full Bill of Rights coverage, including trade in and return policies, order directly from SVS. If you buy them anywhere else, you are subject to that store's return policies, which might be less impressive.
Here is the setup at the time of upload:
Amplifier Denon X6200W: http://amzn.to/2fbCbGx
Tried the Marantz, loved it except for the portal display, preferred the overall sound: http://amzn.to/2eKf9SI
Provided on a demo basis by SVS:
Towers: http://sub101.link/PrimeTower
Surrounds: http://sub101.link/SatelliteAtmos/DTS:X/Auro 3D height effect speakers: http://sub101.link/ElevationCenter: http://sub101.link/PrimeCenter
Dual Ported Subwoofers: http://sub101.link/PB-2000
PB-16 Ultra: http://sub101.link/PB-16Ultra
SVS Soundpath Subwoofer IsolationSystem: http://sub101.link/Isolation
Speaker wire:
http://sub101.link/SP1SpeakerCable
http://sub101.link/UltraSpeakerCable
Subwoofer cable: http://sub101.link/RCA
LG 4K 3D that I replaced previous Vizio with a SquareTrade type warranty. Love the LG, some issues aside.
http://bit.ly/LG4K3D65 (newer version)
Measurement Mic for use with Room EQ Wizard:
http://bit.ly/UMIK-1
Room EQ Wizard (free, donations encouraged for the guy that created it-not me, use earplugs!):
http://www.roomeqwizard.com/
Follow on Facebook and Twitter
https://twitter.com/subwoofer101com
https://www.facebook.com/subwoofer101
https://open.spotify.com/user/subwoofer101
Subscribe for more videos like this, and feel free to share, comment, and ask questions.

20000Hz Ultrasonic Mouse and Rat Repellent (11 1/2 Hours)

20000Hz UltrasonicMouse and Rat Repellent (11 1/2Hours)
Turn the volume all the way up and let this scare the mice or rats out of your house. You will need g...

20000Hz UltrasonicMouse and Rat Repellent (11 1/2Hours)
Turn the volume all the way up and let this scare the mice or rats out of your house. You will need good loud speakers for this to work, using your portable devices may work, but not as effective because of the small, weak speakers.
To get the best quality sound you will want to run this at the highest quality (1080p) and have a fast internet connection. The quality of the noise is dependent on the quality of you stream.

20000Hz UltrasonicMouse and Rat Repellent (11 1/2Hours)
Turn the volume all the way up and let this scare the mice or rats out of your house. You will need good loud speakers for this to work, using your portable devices may work, but not as effective because of the small, weak speakers.
To get the best quality sound you will want to run this at the highest quality (1080p) and have a fast internet connection. The quality of the noise is dependent on the quality of you stream.

playlist 30 day Ultrasonic Rodent Mouse Repelant :https://www.youtube.com/watch?v=J8zo1wXfvFc&list=PLe5_kK6g9ABBIO5gFvCkg-VpKR4Sx58d3&index=1
https://www.youtube.com/playlist?list=PLe5_kK6g9ABBIO5gFvCkg-VpKR4Sx58d3
Electronic mouse repellents operate under the idea of using high-frequency sounds to drive mice away from food sources and nesting grounds within human homes.
Sonic or ultrasonic devices have been touted as repellents for everything from roaches to insects to rodents, specifically rats and mice. There are multiple brands of these electric devices that are said to emit either a sonic or ultrasonic wave, which these pests allegedly find irritating. Some are sold specifically to repel rodents. However, there is little data that these devices repel insects or are effective in rodent control.
Rats and mice emit high-pitched sounds and may communicate using these sounds. Devices that use sound that humans can hear typically have no effect on the rodents. Sonic devices are also used to deter birds, but there is only temporary relief, if any. In fact, in areas with large populations of birds, birds have been observed roosting on top of sonic units. Humans can hear some sounds heard by rats and mice; however, much of the rodents’ hearing range is above the human range. This range outside of human hearing is called “ultrasonic.”
The theory of ultrasonic repellents is to create a sound irritating to rodents, but yet at a frequency out of the range of human hearing. Even though sound may be created that can be heard by rodents and not heard by humans, there is little data to support that these devices repel rodents.
These sounds are supposed to be alarming to mice and discourage them from settling or feeding in affected areas. However, the sound emitted by these repellents cannot pass through walls, and furniture may limit their range. Data on these tools show little to no effectiveness. If mice are present in a home, it is best to contact a pest management professional, since mice can be destructive and spread contamination.

playlist 30 day Ultrasonic Rodent Mouse Repelant :https://www.youtube.com/watch?v=J8zo1wXfvFc&list=PLe5_kK6g9ABBIO5gFvCkg-VpKR4Sx58d3&index=1
https://www.youtube.com/playlist?list=PLe5_kK6g9ABBIO5gFvCkg-VpKR4Sx58d3
Electronic mouse repellents operate under the idea of using high-frequency sounds to drive mice away from food sources and nesting grounds within human homes.
Sonic or ultrasonic devices have been touted as repellents for everything from roaches to insects to rodents, specifically rats and mice. There are multiple brands of these electric devices that are said to emit either a sonic or ultrasonic wave, which these pests allegedly find irritating. Some are sold specifically to repel rodents. However, there is little data that these devices repel insects or are effective in rodent control.
Rats and mice emit high-pitched sounds and may communicate using these sounds. Devices that use sound that humans can hear typically have no effect on the rodents. Sonic devices are also used to deter birds, but there is only temporary relief, if any. In fact, in areas with large populations of birds, birds have been observed roosting on top of sonic units. Humans can hear some sounds heard by rats and mice; however, much of the rodents’ hearing range is above the human range. This range outside of human hearing is called “ultrasonic.”
The theory of ultrasonic repellents is to create a sound irritating to rodents, but yet at a frequency out of the range of human hearing. Even though sound may be created that can be heard by rodents and not heard by humans, there is little data to support that these devices repel rodents.
These sounds are supposed to be alarming to mice and discourage them from settling or feeding in affected areas. However, the sound emitted by these repellents cannot pass through walls, and furniture may limit their range. Data on these tools show little to no effectiveness. If mice are present in a home, it is best to contact a pest management professional, since mice can be destructive and spread contamination.

The Cricket on the Hearth by Charles Dickens (Christmas Audio Book Read with British English Accent)

Summary:
The tale of John Peerybingle, the good-hearted carrier, and his young wife Mary ('Dot'), interwoven with the story of poor toymaker Caleb Plummer, his ...

Summary:
The tale of John Peerybingle, the good-hearted carrier, and his young wife Mary ('Dot'), interwoven with the story of poor toymaker Caleb Plummer, his beloved blind daughter Bertha, and the harsh old toy merchant Tackleton, who is due to marry May Fielding, a childhood friend of Dot. Comic relief is provided by Tilly Slowboy, the disaster-prone nursemaid of John and Dot's baby, and Boxer, the family dog.
The cricket who chirps on the family hearth assumes fairy form to save the day when disaster looms in the form of a mysterious stranger. Sentimental? Certainly - but this, the third (1845) of Dickens' short Christmas books, is as charming and irresistible as its predecessors A Christmas Carol (1843) and The Chimes (1844).
The novella is subdivided into chapters called 'Chirps', similar to the 'Quarters' of The Chimes or the 'Staves' of A Christmas Carol.

Summary:
The tale of John Peerybingle, the good-hearted carrier, and his young wife Mary ('Dot'), interwoven with the story of poor toymaker Caleb Plummer, his beloved blind daughter Bertha, and the harsh old toy merchant Tackleton, who is due to marry May Fielding, a childhood friend of Dot. Comic relief is provided by Tilly Slowboy, the disaster-prone nursemaid of John and Dot's baby, and Boxer, the family dog.
The cricket who chirps on the family hearth assumes fairy form to save the day when disaster looms in the form of a mysterious stranger. Sentimental? Certainly - but this, the third (1845) of Dickens' short Christmas books, is as charming and irresistible as its predecessors A Christmas Carol (1843) and The Chimes (1844).
The novella is subdivided into chapters called 'Chirps', similar to the 'Quarters' of The Chimes or the 'Staves' of A Christmas Carol.

#TPE #plasmaexchange
The Operating Instructions of #Fresenius Kabi #COM.TEC
This video describes the therapeutic procedures.
– Installation of the #apheresis set
– Priming (preceded by the alarm test)
– Separation
– Reinfusion
The blood cell separator permits the collection of blood components
from donors, therapeutic apheresis or #therapeutic plasma exchange
The device is operated via a high-resolution color monitor with softkeys on either side. The monitor will only show those keys and user help messages required in the respective phase of the program. The current data of the separation will always be displayed.
A set, which basically consists of the separation chamber, the pump
lines, the drip chambers and the bags, is required for the separation
procedure. Different sets are required depending on the procedure.
The whole blood is separated in a separation chamber utilizing
centrifugal force. The blood leak detector inside the centrifuge cabinet alerts the operator to prevent dangerous blood loss of the donor or the patient.
The whole blood and the individual blood components are transported by five peristaltic line pumps. The appropriate flow paths in the set are opened and closed by automatic clamps.
The entire separation procedure is continuously monitored by various sensors ensuring the donor's or patient's safety at all times. In the event of a critical condition, a warning or the alarm condition is displayed on the monitor and an audible signal is sounded. The device will simultaneously close the return clamp to separate the donor circuit from the machine circuit. The separation is stopped.

#TPE #plasmaexchange
The Operating Instructions of #Fresenius Kabi #COM.TEC
This video describes the therapeutic procedures.
– Installation of the #apheresis set
– Priming (preceded by the alarm test)
– Separation
– Reinfusion
The blood cell separator permits the collection of blood components
from donors, therapeutic apheresis or #therapeutic plasma exchange
The device is operated via a high-resolution color monitor with softkeys on either side. The monitor will only show those keys and user help messages required in the respective phase of the program. The current data of the separation will always be displayed.
A set, which basically consists of the separation chamber, the pump
lines, the drip chambers and the bags, is required for the separation
procedure. Different sets are required depending on the procedure.
The whole blood is separated in a separation chamber utilizing
centrifugal force. The blood leak detector inside the centrifuge cabinet alerts the operator to prevent dangerous blood loss of the donor or the patient.
The whole blood and the individual blood components are transported by five peristaltic line pumps. The appropriate flow paths in the set are opened and closed by automatic clamps.
The entire separation procedure is continuously monitored by various sensors ensuring the donor's or patient's safety at all times. In the event of a critical condition, a warning or the alarm condition is displayed on the monitor and an audible signal is sounded. The device will simultaneously close the return clamp to separate the donor circuit from the machine circuit. The separation is stopped.

Anthem by Ayn Rand (1905-1982) - FULL Audio Book - w/ Transcript/Captions - GreatestAudioBooks.com
Anthem is a dystopian science fiction story taking place at some unspecified future date. Mankind has entered another dark age as a result of what Rand saw as the weaknesses of socialistic thinking and economics. Technological advancement is now carefully planned (when it is allowed to occur, if at all) and the concept of individuality has been eliminated (for example, the word "I" has disappeared from the language). As is common in her work, Rand draws a clear distinction between the "socialist/communal" values of equality and brotherhood and the "productive/capitalist" values of achievement and individuality. The story also parallels Stalinist Russia, which was currently going on at the time as the story was published. (Summary from Wikipedia)
►For FREESPECIAL AUDIOBOOK OFFERS & MORE:
http://www.GreatestAudioBooks.com
►SUBSCRIBE to GreatestAudio Books:
http://www.youtube.com/GreatestAudioBooks
►Become a FRIEND:
http://www.Facebook.com/GreatestAudioBooks
►BUY T-SHIRTS & MORE:
http://bit.ly/1akteBP
►Visit our WEBSITE:
http://www.GreatestAudioBooks.com
READ along by clicking the Captions/Transcript button (CC).
LISTEN to all 12 Chapters for free!
Chapter 01 -- 00:00:00
Chapter 02 -- 00:32:15
Chapter 03 -- 00:52:15
Chapter 04 -- 00:57:05
Chapter 05 -- 01:00:59
Chapter 06 -- 01:06:08
Chapter 07 -- 01:13:22
Chapter 08 -- 01:27:03
Chapter 09 -- 01:32:24
Chapter 10 -- 01:42:24
Chapter 11 -- 01:51:19
Chapter 12 -- 01:59:11
#AynRand #Anthem #audiobook #audiobooks #GreatestAudioBooks
This video: Copyright2012. GreatestAudioBooks.com
This is a Librivox recording. All Librivox recordings are in the public domain. Total running time: 2:11:57
Read by Chere Theriot - Cover design by Kathryn Delaney
Painting by Luigi Russolo, Music, (1911)

Anthem by Ayn Rand (1905-1982) - FULL Audio Book - w/ Transcript/Captions - GreatestAudioBooks.com
Anthem is a dystopian science fiction story taking place at some unspecified future date. Mankind has entered another dark age as a result of what Rand saw as the weaknesses of socialistic thinking and economics. Technological advancement is now carefully planned (when it is allowed to occur, if at all) and the concept of individuality has been eliminated (for example, the word "I" has disappeared from the language). As is common in her work, Rand draws a clear distinction between the "socialist/communal" values of equality and brotherhood and the "productive/capitalist" values of achievement and individuality. The story also parallels Stalinist Russia, which was currently going on at the time as the story was published. (Summary from Wikipedia)
►For FREESPECIAL AUDIOBOOK OFFERS & MORE:
http://www.GreatestAudioBooks.com
►SUBSCRIBE to GreatestAudio Books:
http://www.youtube.com/GreatestAudioBooks
►Become a FRIEND:
http://www.Facebook.com/GreatestAudioBooks
►BUY T-SHIRTS & MORE:
http://bit.ly/1akteBP
►Visit our WEBSITE:
http://www.GreatestAudioBooks.com
READ along by clicking the Captions/Transcript button (CC).
LISTEN to all 12 Chapters for free!
Chapter 01 -- 00:00:00
Chapter 02 -- 00:32:15
Chapter 03 -- 00:52:15
Chapter 04 -- 00:57:05
Chapter 05 -- 01:00:59
Chapter 06 -- 01:06:08
Chapter 07 -- 01:13:22
Chapter 08 -- 01:27:03
Chapter 09 -- 01:32:24
Chapter 10 -- 01:42:24
Chapter 11 -- 01:51:19
Chapter 12 -- 01:59:11
#AynRand #Anthem #audiobook #audiobooks #GreatestAudioBooks
This video: Copyright2012. GreatestAudioBooks.com
This is a Librivox recording. All Librivox recordings are in the public domain. Total running time: 2:11:57
Read by Chere Theriot - Cover design by Kathryn Delaney
Painting by Luigi Russolo, Music, (1911)

FederalSignalsStreamline SLM500 SeriesLED Audible and VisualSignalIndicator presented by Katie Nyberg for Galco TV.
Buy the items featured in this video at 800-337-1720 or visit:http://www.galco.com/buy/Federal-Signal/SLM500A
The SLM500 series is a multifunctional LED beacon and sounder combination developed with a multiple input technology that allows for three separate forms of alarm: Alert, pre-alarm, and alarm that are controllable via independent electric contacts. This model benefits from two light effects: (steady and flashing), and 64 different tones that are selectable via dip-switch.
Sign up for Galco’s newsletter that features our newest products, our can't-miss deals, our best videos, and total access to Galco’s electronics expertise: http://www.galco.com/email/
Connect with us!
https://plus.google.com/+GalcoIndustrial
https://www.facebook.com/GalcoIndustrial
https://twitter.com/GalcoIndustrial
https://www.linkedin.com/company/galco-industrial-electronics
Don't forget to like and comment on this video, and subscribe to our channel!
Galco is a Factory Authorized Stocking Distributor for Over 150 Brands of Industrial Electrical & ElectronicAutomation, Controls and Component Products; On-Site and Send-In Repair Services for Industrial Control & Automation Products for Over 2,000 Brands; Engineered Systems Integration, Retrofits & Upgrades for VariableSpeedDrives, CNC, PLCSystems, Dynamometers & TestStandApplications. Visit us online at http:// www.galco.com or call us at 800-337-1720.
http://www.galco.com/safety
With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.
GTV, Galco, galco.com, Galco Industrial Electronics, and Galco Industrial Electronics, Inc. are registered and/or pending registered trademarks under the U.S. Patent and TrademarkOffice, assumed names, registered domain names, and/or trade names of Galco Industrial Electronics, Inc., a Michigan corporation.
LEGAL DISCLAIMER:
While we have made every attempt to ensure that the information provided is accurate and has been obtained from reliable sources, Galco is not responsible for any errors or omissions, or for the results obtained from the use of this information. All information is provided "as is", with no guarantee of completeness, accuracy, timeliness or of the results obtained from the use of this information, and without warranty of any kind, express or implied, including, but not limited to warranties of performance, merchantability and fitness for a particular purpose. At all times you should defer to the instructions and safety guidelines issued by the manufacturer. In no event will Galco, its agents or employees thereof be liable to you or anyone else for any decision made or action taken in reliance on the information provided to you or for any consequential, special or similar damages, even if advised of the possibility of such damages.

20Hz to 20kHz (Human Audio Spectrum)

Sinusoidal wave going trough entire human audio spectrum, starting at 20Hz and ending at 20kHz. Note that the frequency increases exponentially, the idea was to increase the frequency by constant fraction of currently played frequency rather than by a constant value (which would result in clearly noticeable fast change at lower frequencies and nearly no change at higher frequencies). Enjoy.
Note: This wave has the same volume level measured by acoustic pressure all the time, however human sound perception differs depending on frequency. For lower frequencies (below 1kHz) you might want to increase your volume, but don't forget to lower it later to avoid damage to your hearing.
If you don't hear anything below 40-50Hz even at full volume your audio hardware is probably incapable of playing lowest frequencies. You might want to try to listen on the headphones in such case. Also if you stop hearing sound somewhere between 10kHz - 20kHz - do not increase your volume for safety reasons. Every human hears a bit differently and have different hearing thresholds. Hearing range also changes with age. Younger people can usually hear higher frequencies.
For HD (High Definition) version of this test, which might yield better audio quality see: http://www.youtube.com/watch?v=H-iCZElJ8m0

A demonstration of the Federal Signal SelecTone Model300 Audible Signaling Device. Buy this featured item at 800-337-1720 or follow this link: http://www.galco.com/shop/300-Federal-Signal-Sounders-Audible-Signaling-Devices?source=YouTubeText
The FederalSignal SelecTone® Model 300 is a lightweight and compact, solid‑state audible signaling device designed to amplify a pre‑selected tone over existing ambient noises. The speaker cone and projector are made of spun aluminum. The internal amplifier circuitry and tone module are contained in a housing of die‑cast aluminum. Dust‑ and moisture‑proof gasketing provides protection from the elements. All external components are sealed with gray enamel paint.
Features of the 300 SelecTone:
- 12 VDC/36 VDC/250 VDC
- Compatible with UTMToneModule
- 110 dB at 10 Feet
- 3R TypeEnclosure
- UL; cUL; CSA Approvals
The Model 300 is designed for applications which have 12, 36, or 250VDC power supplies. The 250VDC version is UL and cUL Listed and CSA Certified. All models are rated Type 3R for indoor/outdoor use.
To view more Federal Signal Audible Signaling Devices follow this link: http://www.galco.com/shop/Federal-Signal-Sounders-Audible-Signaling-Devices?source=YouTubeText
And to see the full line of Federal Signal products available, please go to: http://www.galco.com/find/Federal-Signal?source=YouTubeText
Galco is a Factory Authorized Stocking Distributor for Over 150 Brands of Industrial Electrical & ElectronicAutomation, Controls and Component Products; On-Site and Send-In Repair Services for Industrial Control & Automation Products for Over 2,000 Brands; Engineered Systems Integration, Retrofits & Upgrades for VariableSpeedDrives, CNC, PLCSystems, Dynamometers & TestStandApplications. Visit us online at http:// www.galco.com or call us at800-337-1720.
http://www.galco.com/safety
With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.
GTV, Galco, galco.com, Galco Industrial Electronics, and Galco Industrial Electronics, Inc. are registered and/or pending registered trademarks under the U.S. Patent and TrademarkOffice, assumed names, registered domain names, and/or trade names of Galco Industrial Electronics, Inc., a Michigan corporation.

4:19

Audible EME signal reception test TS-2000 x RTL x FunCube Pro+

GRAVES Radar from France via EME. That dog barking noise in the back is not coming from th...

Alien Speech? Found in NASA's Saturn Radio Signal

http://www.tjmitchell.com/stuart/saturnrosslyn.htmlLink to NASAFile for Download..
http://saturn.jpl.nasa.gov/multimedia/images/saturn/audio/pia07967-072504.wav
I just wanted to thank everyone for their input..good and bad...
I still have no idea yet what this is...I innocently raised it 12 tones and this is what appeared. I dont mean it to be 'scare-mungoring' its just to my mind (as a musician) it has definite patterns to the ear..whether speech, asteroids, magnetic waves, im not qualified to say, but all I know is...its an interesting pattern...JVD
Important info - Please read:
Speech patterns have been found in a radio signal released by NASA almost 3 years previously in 2004.
Judge the sound for yourself, it is a very bizarre anomaly but very much worth investigating.
Instructions:
1) Download and save the original WAV file from NASA/Cassini website:
http://saturn.jpl.nasa.gov/multimedia/images/saturn/audio/pia07967-072504.wav
2)Open an audio editor like Cool Edit or Sonar and raise the pitch/frequency of the file by 12 tones with the pitch shifter..
and there it is, speech patterns.
How can anyone explain this anomaly. Certainly NASA have no explanation for it after we presented the file to them for their opinion. SETI also dont know what make of it. What do you think?
SOURCE:
http://cassini.physics.uiowa.edu/space-audio/cassini/SKR2/
http://www.tjmitchell.com/stuart/saturnrosslyn.html
yours,
JVD

Analog vs. Digital As Fast As Possible

What Is the difference between analog and digital, and how do they work together to make modern life possible?
Audible message: Thanks to Audible for supporting our channel. Get a free 30 day trial at http://www.audible.com/techquickie.
Follow: http://twitter.com/luke_lafr
Join the community: http://linustechtips.com
License for image used in this video: https://creativecommons.org/licenses/by/3.0/legalcode

Federal SignalAV1Flashing Combination Audible VisualSignal presented by Katie Rydzewski for Galco TV. Buy the item featured in this video at 800-337-1720 or visit: http://www.galco.com/shop/AV1-Federal-Signal-Combination-Signaling-Devices-Signaling-Devices?source=YouTubeText
Model AV1 combination audible/visual signal. The AV1 features a 100% polycarbonate housing that is rated for Type 3R rain‑tight applications. Available dome colors include amber, blue, clear, green and red.
The integrated buzzer provides 85dB output at 10 feet (95dB @ 1 meter). The sounder is synchronized to buzz at the same rate as the visual signal — 75 times per minute.
The AV1 comes in two voltage variations: 24VDC and 120VAC. Each unit is factory assembled with two color‑coded leads. The AV1 is UL and cUL Listed and CSACertified.
AV1 Series Features:
- 24 VDC or 120VAC
- 5 DomeColors
- 3R Type Enclosure
- Variety of Mounting Options
- UL; cUL; CSA Approvals
To find more Federal Signal AV1 Series Audible/Visual Signals visit: http://www.galco.com/shop/AV1-Federal-Signal-Combination-Signaling-Devices-Signaling-Devices?source=YouTubeText
For more Federal Signal Combination Audible/Visual Signals go to: http://www.galco.com/shop/Federal-Signal-Combination-Signaling-Devices-Signaling-Devices?source=YouTubeText
And to find more Federal Signal Signaling Devices go to: http://www.galco.com/get/Federal-Signal-Signaling-Devices?source=YouTubeText
For the full line of Federal Signal Products visit: http://www.galco.com/find/Federal-Signal?source=YouTubeText
Galco is a Factory Authorized Stocking Distributor for Over 150 Brands of Industrial Electrical & ElectronicAutomation, Controls and Component Products; On-Site and Send-In Repair Services for Industrial Control & Automation Products for Over 2,000 Brands; Engineered Systems Integration, Retrofits & Upgrades for VariableSpeedDrives, CNC, PLCSystems, Dynamometers & TestStandApplications. Visit us online at http:// www.galco.com or call us at 800-337-1720.
http://www.galco.com/safety
With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.
GTV, Galco, galco.com, Galco Industrial Electronics, and Galco Industrial Electronics, Inc. are registered and/or pending registered trademarks under the U.S. Patent and TrademarkOffice, assumed names, registered domain names, and/or trade names of Galco Industrial Electronics, Inc., a Michigan corporation.
VIDEO TRANSCRIPT:
Welcome to G-TV
Today I will be showing you the AV1 Flashing Combination Audible/Visual Signal by Federal Signal.
Federal Signal Model AV1 combination audible/visual signal features a 100% polycarbonate housing that is rated for Type 3R rain-tight applications. The AV1 design provides three mounting configurations, and is available in amber, blue, clear, green and red.
The black base will accommodate mounting to a half inch NPT pipe, a 4-inch octagonal electrical box or any flat surface. The surface mount gasket serves as a template for preparing a flat surface with appropriate mounting holes.
All AV1 units feature a unique twist and lock dome to allow tool-free access to the incandescent lamp. The Fresnel lensing provides superior visibility in all directions, and the integrated buzzer provides 85dB output at 10 feet. The sounder is synchronized to buzz at the same rate as the visual signal, which is 75 times per minute. Federal Signals AV1 comes in two voltage variations: 24 volts DC and 120 volts AC. Each unit is factory assembled with two color-coded leads. If desired, the user can remove the leads and connect directly to the terminal block located in the base of the unit.
The AV1 is UL and cUL Listed and CSA Certified.
Federal Signals AV1 Flashing Combination Audible/Visual Signal along with thousands of other parts and services are available at Galco.com

Audio Signal Phase 101

Learn compression: http://learncompression.com
Learn to mix hip-hop: http://mixinghiphop.com
Improve your ear: http://quiztones.com
More mixing tips: http://theproaudiofiles.com
An in-depth tutorial on phase. Is it timing difference or polarity? What about comb filtering? What is a linear phase EQ? Learn more here: http://theproaudiofiles.com/phase/
---
Tutorial Breakdown:
SignalPhase
- What's the deal?
- Why does it matter?
- What tools are available?
- In-phase vs. Out-of-phase?
- "Kind of" In-phase?
- "Sort of" Out-of-phase?
Phase is complicated
— Not just In-phase or Out-of-phase
Signal processors can effect phase
— Phase distortionGood news: humans cannot perceive signal phase differences in some cases
Bad news: other cases...
Signal phase is complicated
— Phase is frequency dependent
Are signal processors going to screw up my mix?
— Linear phase processors
Linear phase
— What's with the name?
Non-linear phase
— Are there any drawbacks or trade-offs?
Is a signal phase shift the equivalent of a time shift, just without the shift in time?
— That doesn't seem so bad
It is more complicated than that
— Phase is frequency dependent
Linear phase
— What's with the name?
— Non-linear phase
Are there any drawbacks or trade-offs?
Linear Phase
— Processing results in a constant time shift for all frequencies
— Relationship between frequencies is not distorted
Trade-off
— Time delay (Latency)
When are linear phase processors useful?
— When you don't want the phase relationship between different frequencies to be distorted
— When a little latency doesn't hurt anything
— Master Bus
— Compensate for latency

Audio Signal-Tracer SVF7000: Analysis of the input circuitry

Analyzing a quite advanced (for 1990) audio signal-tracer with a lot of comfort-features intended for audio repair-work and quickchecking of audio equipment.
Yet although the circuit-design is quite well-done and semi-professional there is a little issue with the frequency-response at the edges of the audible spectrum.
And there is a grave design-error in the choice of the switchable output-impedances of the frequency-generator part.
Features of the ELV SVF7000:
Autoranging relays-switched input-range from 2.5mV to 256V (!) full-scale in a shielded metal-can, both True-RMS level and dB-display, selectable relative or absolute dBm display, quasi-power-measurement with selectable load-resistances, peak- and average display of wattage, selectable manual and autoranging of the input-stage, integrated or external loudspeaker with 1.5W amplifier, switchable RIAA record-equalisation, 4 relays-switched inputs (BNC, 2xRCA, DIN), signal-generator with 4 quartz-stabilized sine-signals (1% distortion; 20Hz, 1kHz, 10kHz, 20kHz), 5 selectable output-levels/impedances (50 Ohms, RCA-Aux, microphone, magnetic record-player pickup, crystal/piezo pickup), 4 output-connectors (BNC, 2xRCA, DIN)...Link to original 3-part article-series from ELV-magazine:
https://www.elv.de/Komfort-Signalverfolger-SVF-7000-Teil-13/x.aspx/cid_726/detail_35001
SupportRoger on Patreon!
https://www.patreon.com/kainkalabs

26:52

Voyager 2 PWS Jupiter Encounter audio 1979-07-02 15:56-16:45 SCET

The PWS plasma wave instrument on Voyager 2 recorded these signals as the spacecraft was a...

Voyager 2 PWS Jupiter Encounter audio 1979-07-02 15:56-16:45 SCET

The PWS plasma wave instrument on Voyager 2 recorded these signals as the spacecraft was approaching Jupiter on July 2, 1979, between 1556 and 1645 spacecraft event time (essentially UTC). These are the authentic sounds of Jupiter in contrast to the multitude of artistic interpretations and "therapeutic" mixes found on YouTube that may be based on PWS data, but have been highly manipulated and sound very little like the original signals. The audio presented here is not shifted in frequency and not filtered or mixed with music.
The PWS wideband waveform instruments on the two Voyager spacecraft sample the electric field on the dipole wire antenna at a rate of 28800 4-bit samples per second, using an automatic gain control. Consequently, the audio is just slightly better than telephone quality. Packets of 1600 samples are acquired, separated by the equivalent of 128 missing samples. Running these packets together results in the playback taking less than real-time (by a factor of 1600 / 1728), and also introduces a slight audible flutter. The amplitudes at the edges of these packets have been smoothed to reduce this flutter, but this is the only modification to the signal.
These are by no means the only "sounds" that Jupiter makes, but there is nice variety during this hour interval. All of the available measurements during this interval are present but since there are time gaps, the total run time is approximately 27 minutes (plenty long to become tedious to listen all the way through). Let me assure you, however, that there are less-interesting intervals.
Although I'm not qualified to interpret the science, I should at least point out some of the interference present. The constant tone at 2.4kHz is caused by the spacecraft power supply. The occasional sounds like someone pounding a drum or thumping on an oil barrel are due to either a stepper motor on another instrument or to spacecraft attitude thruster firings. The tones with harmonics that build slowly and end abruptly and appear as multiple horizontal lines in the spectrogram are due to interference from other science instruments onboard. UnlessI've missed something, everything else is the genuine "sound" of Jupiter.
Now, what do I mean by "sound" of Jupiter? First, the sounds are not typically produced at the planet itself, but in the magnetosphere surrounding the planet. In this particular case, most of the signals are generated from the interaction of the supersonic solar wind colliding with the bow shock ahead of Jupiter's magnetosphere. These waves are not the same as the pressure waves in the atmosphere that we normally think of as sound. However, they do have some similarities. Even though space is an excellent vacuum, it is "filled" with particles with a density of typically a few to several hundred per cubic centimeter near planets. Most of these are charged and constitute what we call plasma. Being charged, these particles interact with each other without the need to "collide" as they do in the atmosphere. Moving charged particles both produce electromagnetic fields and waves and also are moved by electromagnetic fields and waves generated elsewhere. These are "plasma waves". Many of these interactions occur at frequencies that are audible to humans. This doesn't mean that a human ear could hear them in space -- the pressures are far too small -- but it is conceivable that an ultra-sensitive microphone could measure them. In practice, however, it is far easier to measure the oscillations in the accompanying electric and magnetic fields with antennas, and that is just what we do. To produce sound we can hear, we simply do the moral equivalent of hooking our antennas up to an amplifier in order to drive speakers. Plasma waves can be considered "space audio".
The video shows a series of 48-second-wide spectrograms with an animated cursor that shows the time of the audio track. The amplitude of the signals is color coded with dark blue for the weakest and red for the strongest signals. Low frequencies are at the bottom of the plot and high frequencies are at the top. Time ranges from left to right.
For more information on the Voyager project, see
http://voyager.jpl.nasa.gov/
For more information on the Voyager plasma wave investigations, see
http://www-pw.physics.uiowa.edu/voyager/
For access to the specific data used to produce this video, see
http://www-pw.physics.uiowa.edu/voyager/data/VGPW_2001/EXTRAS/HTML/JUPITER_ENCOUNTER/V2P2_056/V2P2_056.HTM
http://www-pw.physics.uiowa.edu/voyager/data/VGPW_2001/EXTRAS/HTML/JUPITER_ENCOUNTER/V2P2_057/V2P2_057.HTM
For more information on space audio, see
http://space-audio.org/
For more videos related to space audio, see my YouTube channel
http://youtube.com/VoyagerPWS
Please note the disclaimers under "About SpaceAudio" on my YouTube channel. This is not a presentation of scientific findings and I am not representing any organization.

D/A and A/D | Digital Show and Tell (Monty Montgomery @ xiph.org)

Original Video: http://xiph.org/video/vid2.shtml
Why you don't need 24 Bit 192 kHz listening formats - https://people.xiph.org/~xiphmont/demo/neil-young.html
More videos in this series: http://xiph.org/video/
Get the software - https://wiki.xiph.org/Videos/Digital_Show_and_Tell
Monty at Xiph presents a well thought out and explained, real-time demonstrations of sampling, quantization, bit-depth, and dither on real audio equipment using both modern digital analysis and vintage analog bench equipment.
This video has been reproduced with permission of Monty @ xipg.org and in accordance with Attribution-ShareAlike 3.0 http://creativecommons.org/licenses/by-sa/3.0/
Further reading: Audio Myths & DAWWars - http://www.image-line.com/support/FLHelp/html/app_audio.htm
This is a video about the digital vs analog audio quality debate. It explains, with examples, why analog audio within the accepted limits of human hearing (20 Hz to 20 kHz) can be reproduced with perfect fidelity using a 44.1 kHz 16 Bit digital signal.

56:31

Lecture - 28 Audio Coding: Basic Concepts

Lecture Series on Digital Voice and Picture Communication by Prof.S. Sengupta, Department...

Room EQ Wizard For Beginners: A Simple Overview of How To Measure Subwoofers In A Home Theater 😀🎵

Room EQ Wizard is a great program that is free to use, and very good for discovering bass problems or measuring your "in room" subwoofer performance. Vv Click "SHOW MORE" vV
Any decent measurement microphone can be used, but the one I use in the video is the MiniDSP Umik-1. It's not insanely expensive, and it comes with a calibration file.
Umik-1 microphone: http://amzn.to/2lS4ufM (anything you buy from Amazon within 24 hours of following this link would help this channel)
Special thanks to John Mulcahy, who produced this software and provides it to the audio world for free! He has a donation link, and knowing what it's like to produce free content, it would be really cool to send him a little something if you you find the program useful. I certainly do. Even a $1 helps, and it goes towards improving the software.
http://www.roomeqwizard.com/
On that site you will find the software itself, links to discussions and help articles, and a general wealth of information beyond what I can provide.
As you can tell from the video, I'm no expert, and there are features in the program that I will touch on in future videos, but don't stop learning with me. I just wanted my viewers to get an idea of how to begin using the program. Once you get going, it gets a little easier.
The better you get at taking notes, the more useful past measurements are. As you could see in the video, there were a few times good notes would have made me look a little better (Flat vs Reference, lol). There might have been a difference with those settings on the X-2000, but it's not really important one way or another.
Also keep in mind that the line isn't everything. These graphs can hint at the difference between a single and dual subs, but it doesn't tell the whole "dynamic" story. It doesn't just fill in and even out bass, it adds a "movie theater" feel.
I should be listening to the PB-16 Ultra by itself, but I just can't hang, I need 2, it's too hard to go back to a single. I know what I'm hearing is "PB-2000 flavored" PB-16 Ultra, but you really need 2 identical subs to properly hear what any sub can do. For sure, there is increased realism, but a full review will happen after I get the second one in. I can't wait!
***Gear and Links***
Subwoofers should reproduce quality sound with authority throughout the humanly audible bass spectrum (20-100 hertz). Most ported subwoofers do not.
Browse this channel and http://www.subwoofer101.com/ for layman's tech advice, product reviews, content reviews, and tips. It's OK to be new here, that's the whole point!
http://www.subwoofer101.com/best-subwoofers/
I use affiliate links to support this channel and the website, but my opinions are 100% my own. You can support this channel by visiting my Amazon store for little stuff like movies and even big stuff like amps and TV's: http://astore.amazon.com/subwoofer101-20
Subscribing, likes, comments, and shares all help a lot too!
Subwoofer 101 is the world's first SVS affiliate, so if you mention Subwoofer 101, it can help support this channel. Please let them know what you think of the channel, good or bad!
SVS Bill of Rights, one of the reasons I'm so comfortable as an affiliate: http://bit.ly/SVSBillofRights To ensure full Bill of Rights coverage, including trade in and return policies, order directly from SVS. If you buy them anywhere else, you are subject to that store's return policies, which might be less impressive.
Here is the setup at the time of upload:
Amplifier Denon X6200W: http://amzn.to/2fbCbGx
Tried the Marantz, loved it except for the portal display, preferred the overall sound: http://amzn.to/2eKf9SI
Provided on a demo basis by SVS:
Towers: http://sub101.link/PrimeTower
Surrounds: http://sub101.link/SatelliteAtmos/DTS:X/Auro 3D height effect speakers: http://sub101.link/ElevationCenter: http://sub101.link/PrimeCenter
Dual Ported Subwoofers: http://sub101.link/PB-2000
PB-16 Ultra: http://sub101.link/PB-16Ultra
SVS Soundpath Subwoofer IsolationSystem: http://sub101.link/Isolation
Speaker wire:
http://sub101.link/SP1SpeakerCable
http://sub101.link/UltraSpeakerCable
Subwoofer cable: http://sub101.link/RCA
LG 4K 3D that I replaced previous Vizio with a SquareTrade type warranty. Love the LG, some issues aside.
http://bit.ly/LG4K3D65 (newer version)
Measurement Mic for use with Room EQ Wizard:
http://bit.ly/UMIK-1
Room EQ Wizard (free, donations encouraged for the guy that created it-not me, use earplugs!):
http://www.roomeqwizard.com/
Follow on Facebook and Twitter
https://twitter.com/subwoofer101com
https://www.facebook.com/subwoofer101
https://open.spotify.com/user/subwoofer101
Subscribe for more videos like this, and feel free to share, comment, and ask questions.

11:30:00

20000Hz Ultrasonic Mouse and Rat Repellent (11 1/2 Hours)

20000Hz Ultrasonic Mouse and Rat Repellent (11 1/2 Hours)
Turn the volume all the way up ...

20000Hz Ultrasonic Mouse and Rat Repellent (11 1/2 Hours)

20000Hz UltrasonicMouse and Rat Repellent (11 1/2Hours)
Turn the volume all the way up and let this scare the mice or rats out of your house. You will need good loud speakers for this to work, using your portable devices may work, but not as effective because of the small, weak speakers.
To get the best quality sound you will want to run this at the highest quality (1080p) and have a fast internet connection. The quality of the noise is dependent on the quality of you stream.

Ultrasonic Rodent Mouse Repelant

playlist 30 day Ultrasonic Rodent Mouse Repelant :https://www.youtube.com/watch?v=J8zo1wXfvFc&list=PLe5_kK6g9ABBIO5gFvCkg-VpKR4Sx58d3&index=1
https://www.youtube.com/playlist?list=PLe5_kK6g9ABBIO5gFvCkg-VpKR4Sx58d3
Electronic mouse repellents operate under the idea of using high-frequency sounds to drive mice away from food sources and nesting grounds within human homes.
Sonic or ultrasonic devices have been touted as repellents for everything from roaches to insects to rodents, specifically rats and mice. There are multiple brands of these electric devices that are said to emit either a sonic or ultrasonic wave, which these pests allegedly find irritating. Some are sold specifically to repel rodents. However, there is little data that these devices repel insects or are effective in rodent control.
Rats and mice emit high-pitched sounds and may communicate using these sounds. Devices that use sound that humans can hear typically have no effect on the rodents. Sonic devices are also used to deter birds, but there is only temporary relief, if any. In fact, in areas with large populations of birds, birds have been observed roosting on top of sonic units. Humans can hear some sounds heard by rats and mice; however, much of the rodents’ hearing range is above the human range. This range outside of human hearing is called “ultrasonic.”
The theory of ultrasonic repellents is to create a sound irritating to rodents, but yet at a frequency out of the range of human hearing. Even though sound may be created that can be heard by rodents and not heard by humans, there is little data to support that these devices repel rodents.
These sounds are supposed to be alarming to mice and discourage them from settling or feeding in affected areas. However, the sound emitted by these repellents cannot pass through walls, and furniture may limit their range. Data on these tools show little to no effectiveness. If mice are present in a home, it is best to contact a pest management professional, since mice can be destructive and spread contamination.

PROJETO SEMÁFORO SONORO - Audible Signal...

Audio Signal Phase 101...

Matlab demonstration - basic signal manipulation u...

The Beep Test audio Full...

Audio Signal-Tracer SVF7000: Analysis of the input...

Voyager 2 PWS Jupiter Encounter audio 1979-07-02 1...

D/A and A/D | Digital Show and Tell (Monty Montgom...

Lecture - 28 Audio Coding: Basic Concepts...

Interview with the owner of the TT, Helix DSP PRO ...

Room EQ Wizard For Beginners: A Simple Overview of...

20000Hz Ultrasonic Mouse and Rat Repellent (11 1/2...

Vietnam War Audio: Mad Dog One Six...

Interval Timer 30 Seconds...

Ultrasonic Rodent Mouse Repelant...

Lecture - 31 MPEG - 1 Audio Coding...

The Cricket on the Hearth by Charles Dickens (Chri...

The Signal-Man (audiobook)...

How to do Therapeutic plasma exchange using Frese...

Lecture - 37 Audio and Video Compression...

ANTHEM by Ayn Rand - FULL Audio Book - w/ Transcri...

Gizmodo reported on Wednesday that a former Google engineer is suing the company for discrimination, harassment, retaliation, and wrongful termination ...Chevalier's posts had been quoting in Damore's lawsuit against Google, who is also suing the company for alleged discrimination against conservative white men ... “Firing the employee who pushed back against the bullies was exactly the wrong step to take.” ... But the effect is the same....

OSLO. Sea levels will rise between 0.7 and 1.2 metres in the next two centuries even if governments end the fossil fuel era as promised under the Paris climate agreement, scientists said on Tuesday ...Ocean levels will rise inexorably because heat-trapping industrial gases already em­­itted will linger in the atmosphere, melting more ice, it said. In addition, water naturally expands as it warms above four degrees Celsius (39.2F) ... ....

The woman tasked with caring for accused Florida shooter Nikolas Cruz and his brother have moved quickly to file court papers seeking control of their inheritance the day after the massacre at Majory Stoneman Douglas High School, Newsweek reported. When the mother of Nikolas and Zachary Cruz died from flu-related pneumonia last November, their lives were entrusted to Roxanne Deschamps, the report said....

Special CounselRobert Mueller's probe is prepared to accept a guilty plea from the London-based son-in-law of a Russian businessman after he made false statements during the investigation into alleged Russian interference in the 2016 U.S. presidential election, according to the Washington Post... Tymoshenko was later imprisoned by former president Viktor Yanukovych after signing a controversial deal with Russia for natural gas ... U.S ... U.S....

You can search using any combination of the items listed below.

MS Dhoni is undoubtedly one of the coolest individuals to ever play the game of cricket, behaving in a simmering cauldron as if he’s doing something in his own backyard ... An irate Dhoni can be heard telling Pandey. “Oye. B_______ (word not audible)&nbsp;Idhar Dekh Le. Udhar kya dekh raha hai. (Look here. Why are you staring over there’) Also read. SAvIND, 2nd T20 ... The word wasn't clearly audible because of commentary ... ....

Robert See (Bob) Lyons, 85, of SignalMountain, passed away suddenly at his home on Tuesday, Feb ... He was an active member of Signal Mountain Baptist Church and a retired managing partner for Ernst & Young accounting firm where he worked for 34 years ... Visitation will be at Signal Mountain Baptist Church 11 a.m ... 939 Ridgeway Ave, Signal Mtn, TN 37377....

Marco Rubio’s attempt to depict a full assault weapons ban as some kind of worst case scenario failed miserably Wednesday night, when the audience at a televised CNN townhall went absolutely wild for the idea instead. “Stand Up... confronting an array of speakers on the issue ... Also Read. Florida Dad Asks Trump ... At that, the crowd erupted into deafening cheers, with audible cries of “yes” heard above the roar ... Oops....

Bitcoin Price Key Highlights Bitcoin price is still in correction mode but appears to be bouncing off the trend line support. Applying the Fibonacci extension tool shows how high price could go if the trend line holds. Technical indicators are signaling that the uptrend is about to resume ... Technical Indicators Signals ... Stochastic is pulling up from oversold levels to signal that bullish pressure is returning ... MarketFactors ... ....

“A 21-year-old male suffered a gunshot wound to the back,” ShirleyMiller, spokeswoman for the Santa Clarita ValleySheriff’s Station told The Signal Wednesday ... Rob Hahnlein of the SCV Sheriff’s Station told The Signal Tuesday night that a man had been struck and was injured after a shooting near Valle Del Oro in Newhall Tuesday evening ... Jess Rebolledo, who lives near Valle del Oro, told The Signal Wednesday....

Brains of songbirds are tuned into love. If Cupid wanted to make songbirds fall in love, he’d better aim at their brains. That’s because songbirds, which form lifelong mating pairs, have brain systems perfectly tuned to fit together. Take finches ... Because social relationships are so powerful, a baby bird reared by the wrong species, Woolley has found, can learn the wrong species’ song even if its biological father’s song is audible....

A federal judge sentenced a former Arkansas judge Wednesday to five years in prison — a stiffer punishment than prosecutors recommended — after he admitted giving young male defendants lighter sentences in return for personal benefits that included sexual favors ... "That sets his crime apart." ... The ex-judge spoke to Baker briefly and in a barely audible voice said he had tried to convince himself that he was bit doing anything wrong ... .......

ShareTweetSubscribe ... * indicates required. Email Address * ... “We detained a 17-year-old male in conjunction with the vandalism at the baseball field,” ShirleyMiller, spokeswoman for the Santa Clarita ValleySheriff’s Station told The Signal Wednesday afternoon ... “We don’t know if we’re going to have to re-sod or re-seed, but it’s going to take a few thousand dollars to repair,” the park’s facility manager told The Signal Tuesday ... Jim Holt....

Manish Pandey (L) celebrates his half century with MS Dhoni during the second T20I on February 21.CHRISTIAAN KOTZE/AFP/Getty Images. MS Dhoni&nbsp;has always been known for the way he handles himself on and off the field ...Dhoni contributes a lot to the stump mic chatter but most of it is comprises tips for the bowler and witty comments on the state of play ... "Oye ... The word wasn't clearly audible because of commentary ... Related....